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Cashless Society

roomisigloomis writes "France has released "en masse" a new card to replace money. No private information is stored on the card and anybody can use it. Just like cash: you lose it and someone else uses it. Do you think we could be nearing the end of life of paper money?"

78 of 637 comments (clear)

  1. Old news by reynaert · · Score: 5, Interesting

    In Belgium this has been available for a couple of years now. It's called Proton over here and is pretty popular.

    1. Re:Old news by bert · · Score: 4, Informative

      Same in Holland...

    2. Re:Old news by nounderscores · · Score: 2, Informative

      in Hong Kong it's called the Octoupus Smart Card, and it is a non-contact system working on RF. You can leave the card in your wallet or purse, and leave your wallet in your jacket or your purse in your handbag. Just approach the gate and swipe the garment/luggage over the proximity reader and it figures out whether to let you through.

      here's the official site in english.

      ERG Australia has signed a contract to use them in the land of OZ.

      The octopus card is in no way anonymous.

  2. Card to card transfers? by basilisk128 · · Score: 4, Insightful

    I wonder if there will be a way to transfer money directly from one card to another, although I suppose you would need a separate machine for that.

    Otherwise you could only use it at places like stores, where they would have a card reader.

    1. Re:Card to card transfers? by stephanruby · · Score: 2, Insightful
      "I wonder if there will be a way to transfer money directly from one card to another, although I suppose you would need a separate machine for that."

      I suspect there will be a way to do this, but I have a feeling they won't make it easy for us to do so. The leftover change remaining on those prepaid cards is very tempting to the issuing organizations. In France, you already can't get a refund for the leftover change you have in your phone cards.

      As consumers, it is important that we don't utilize this mode of paiment until we get this refund/rollover issue guaranteed and clarified.

    2. Re:Card to card transfers? by MikeFM · · Score: 3, Insightful

      I think that is the main problem with smartcard based digital cash. If you can't transfer between average Joe's without special equipment it's just a fancy debit card. Add a small screen and keyboard (think credit card sized calculator) and make it so they can transfer data by touching and you'd have a decent form of digital cash. If you are retaining the information in a central db somewhere you'd have to have the sending card digitally sign and timestamp the transaction and the recievers card check that data for correctness.. then next time the cards were used somewhere with a connection to the central db it'd send a copy of that transaction in to update the db. The unique signed tranasaction data would make it hard to fake the transactions.

      --
      At what price learning? At what cost wisdom? The price is a man's peace of mind, and the cost is his life.
  3. How do I count it? by jonjohnson · · Score: 5, Insightful

    Paper money has the advantage over the card because you can see how much you have without accessing that information somewhere else.

    1. Re:How do I count it? by Roug · · Score: 2, Informative

      The card doesn't have a battery, so you can't add a LED. The processor in the chip only runs when you stick it in the vending machine slot.

      However, when vending machines that accept coin cards become ubiquitous you are never too far away from a way to verify your wealth. No PIN codes, the value on the card is shown immediately when you stick it in.

  4. How am I suppose to put this... by Chris_Stankowitz · · Score: 4, Funny

    down some strippers G-String? How I ask you?

    1. Re:How am I suppose to put this... by bm_luethke · · Score: 5, Insightful

      This is actually a good point. One of the advantages of cash is that it can be split into whatever demoniations you have.

      For instance, if I have a 45 dollar card and I want you to have 5 dollars, can't do it without a transfer machine (or if you forgot your card). With cash easy, assuming I have a five.

      And then counterfitting. Wow, if money is only a string of ones and zeros on a card WOO HOOO. So its digitally signed? great I just bought a 100 dollar card and did a bit by bit copy.

      Use a central authority, better hope that thing never gets hacked. Use a distributed method - gonna have SEVERE syncing problems (if it is anonymous then you can't just bill me later for the over charge).

      As of right now there is not enough incetive for many to hack a system, make it so it is and you will have script kiddies cloning money - yech.

      --
      ------- Sorry about the spelling, I suffer from two problems. Dyslexia makes it difficult to spell well, lazy makes it
    2. Re:How am I suppose to put this... by Penguin+Follower · · Score: 2, Funny

      Just swipe the card down her crack...

      Funny you should mention that, as I have a true story for that statement:

      I have a friend who actually did that to a stripper... he wasn't tipping and the bouncer told him he had better start tipping or he would ask him to leave (my friend wasn't ordering drinks either, so the place wasn't making much off him, just the door charge). He didn't have any one dollar bills on him, so he whipped out his credit card, swipped it down her crack, and the bouncer promptly escourted him to the door!

    3. Re:How am I suppose to put this... by drinkypoo · · Score: 4, Funny

      Just run it down the slot.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  5. Fatal Flaws by NeoMoose · · Score: 4, Interesting

    What the hell are you supposed to do when someone decides to be an ass and demagnetize your card? Does your money just vanish since you can't scan it and it carries no identifying information?

    1. Re:Fatal Flaws by TeknoHog · · Score: 2, Interesting

      It's a flash chip, not a magnetic stripe. Still, there's the potential problem of hacking into it, for example to add more money.

      --
      Escher was the first MC and Giger invented the HR department.
    2. Re:Fatal Flaws by trmj · · Score: 4, Insightful

      Just as with a credit card or current cash cards that (most) stores use, there would probably be a section of raised lettering that would carry the card's ID number. In fact, if you look at the picture closely, you can even see the numbering.

      The main roblem the I see with this is how does business get done then the system is down / power is out? You wouldn't be able to access the DB that store all of the card information, and therefore wouldn't have any way of verifying if there is money on the card that somebody is using or not.

      --
      Work sucked, until it became unemployment, when it became slightly more tolerable. -Tet
    3. Re:Fatal Flaws by trmj · · Score: 4, Interesting

      Ok I'll bite.

      I happen to work at a store that uses an all-computerized POS system. It's a fairly big retail store, and I have watched the system go down and power go out before, while the store was open and there were customers in there.

      What happened? Well, we pulled calculators off the shelves and found the prices manually, hand wrote reciepts, and anbody that had cash was able to pay and leave. Anybody that needed to use credit / debit had to wait until the power came back on (usually 30 min).

      --
      Work sucked, until it became unemployment, when it became slightly more tolerable. -Tet
    4. Re:Fatal Flaws by tunah · · Score: 3, Funny
      Still, there's the potential problem of hacking into it, for example to add more money.

      Other possible exploits include taking money off without making a purchase, and using Linux on the card rather than money.

      --
      Free Java games for your phone: Tontie, Sokoban
    5. Re:Fatal Flaws by Chester+K · · Score: 4, Insightful

      What the hell are you supposed to do when someone decides to be an ass and demagnetize your card? Does your money just vanish since you can't scan it and it carries no identifying information?

      How's that any worse than when someone decides to be an ass and burn your cash? I'd hardly call it a "fatal flaw" since it's no worse than the alternative in that respect.

      Would you rather have a system where they can track your purchases, but provides security for your money, or one that protects your anonymity but doesn't guarantee your money? You can't really have it both ways.

      --

      NO CARRIER
    6. Re:Fatal Flaws by gvonk · · Score: 2, Interesting

      If your store is truly dependent on being able to survive in this scenario, there would be a market for a battery-powered device that would scan the card and debit from it (I assume using the cellular network). It would seem possible looking at this picture.

      --


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    7. Re:Fatal Flaws by Virus1984 · · Score: 2, Informative

      In Belgium virtually ALL stripe readers were replaced with smart card readers when they introduced the Euro.

      --
      Don't forget to think different.
    8. Re:Fatal Flaws by Kallahar · · Score: 3, Insightful

      Except that you can be de-magnetized by someone simply getting near you. At least they have to actually pick your pocket in order to burn your cash.

      Perhaps they could have the tracking optional? Say, you have the option to put your tracking-code on the card so that the balance is kept on the servers. That way if you're worried about losing it you could voluntarily give up your privacy, but if you want it anonymous then you could, but not have any recourse if it gets erased.

      Travis

  6. I'm not sure.. by Gyan · · Score: 5, Insightful


    Paper money has to be carefully studied and then duplicated with painstaking attention to detail.

    Someone could just probably figure out how money is "stored" and just keep on replenishing. Note the card is anonymous.

    Money might not grow on trees, but it can be created by computer :-)

    1. Re:I'm not sure.. by OttoM · · Score: 2, Interesting
      If they are smart, the card only carries a serial number and the actual amount is stored elsewhere (like credit cards)

      You are wrong. Like the system used here in the Netherlands it is an off-line system. The card itself stores the bit string representing the money. On-line transcations are too expensive for this type of transaction, which is typically used here for parking fees.

      Hacking it may be possible, but is quite difficult. Reasonbly strong crypto is used in these card. The cards carry a smart card that is capable of doing arithmetic functions that are needed for doing the cryptographical computations.

      The protocol used for "charging" the cards does work on-line, and needs special terminals that are mostly located at banks.

    2. Re:I'm not sure.. by IvyMike · · Score: 4, Informative

      Someone could just probably figure out how money is "stored" and just keep on replenishing. Note the card is anonymous.

      David Chaum's digicash system was a good solution to this problem. He developed a system of completely anonymous (even to the bank) e-cash. The executive summary is: using techniques common in encryption, the cash is unforgeable and can be spent once. If you spend the cash twice, there's a random challenge-response sequence you have to go through each time, and you will have now revealed enough information that you're no longer anonymous, and the fact that the money is being double-billed is detected and prevented.

      Googling for "Chaum" and "digicash" gets you a lot of articles which explain the system (which is quite complex) in a level of detail beyond that which is appropriate for slashdot. :) It's a bit hard to believe (at least without going through the math yourself) that it's both anonymous and unforgeable, but that's the beauty of it. There are also quite a few articles about Chaum's company "Digicash" which appears to have been poorly managed. That doesn't change the fact that the mathematics behind digicash are sound.

  7. security concerns? by r0b0t+b0y · · Score: 4, Insightful

    i wish the article looked into how the gov't insured that evildoers are not able to illegally hack cards to increase their value (or start counterfeiting cards) ..

    the article did mention card refills, so it would seem the chip on the card is (re)writable.

    --


    ----
    i do not use drugs, i AM drugs -- Dali
    1. Re:security concerns? by HughsOnFirst · · Score: 2

      In the New York City transit system, the cards just store a unique ID, not the cash or ride value of the card. Thus if they get counterfeited or duplicated ( which is fairly simple from what I understand since they just use a mag stripe ) no new value is created. They were planing to let people use the cards for small purchases at one time but it never happened. That's why the system is pretty secure even though the cards themselves are not. It also as a byproduct creates a track of everywhere you have used your fare card.

  8. Doesn't work... by fulgan · · Score: 5, Informative

    This CashCard has existed here in switzerland for several years. It is, however, largely ignored except for a few places.

    The reason for that is simple and the same as why, in France, the new card is not being well accepted: It has an expensive transaction cost compared to the price of the item you purshase (think 10 centims per transaction where you would use it to buy 1 Euro items), the fact that it is far from annonymous and finally the fact that the machine you use to "load" the card is compley and damn slow to manipulate (whant to buy ? Load your credit card, punch your PIN, wait until the bank answer, withdraw your card, load your cashcard, deposit, remove cash card, load it again, buy item - about 5 minutes for the average persone).

    The only place here, in Geneva, where it is commonly used is for public phones and for paying for car park. Several articales of the French TV and the words from my French friends shows that the same apply to France.

  9. Sounds good to me by virtig01 · · Score: 2, Interesting
    This would, in theory, save the Treasury Department a significant amount of money. The Sacagewea (sp) dollar coin was introduced to reduce Americans' dependence on the paper dollar, since a paper dollar must be replaced more often then minted money. I mean, I've got a 1963 nickel in my pocket right now. What's the oldest dollar in your wallet?

    Of course, I'm not so certain that this needs to be a government implemented project. Companies in the private sector have already done something similar, see Visa.

    And anyway, don't many people choose to be cashless as it is now? When I was in retail, a large percentage of people paid with debit cards linked to a major credit card. There's no cash! John Doe has his paycheck directly deposited in to his checking account, then pays for purchases with his debit card which utilizes a preexisting network system (Visa, Mastercard).

    So bottom line: yeah, a (near-)cashless society is cool, but is government intervention necessary?

  10. Low risk of fraud by mericet · · Score: 2, Insightful

    At a 100 Euro limit, even the lamest implementation, if moderatly resistant to hacking and with better resistance to a constant charge hack is better than paper money which can be printed en-masse.

  11. Re:The End Of Paper Money? by drfrogsplat · · Score: 5, Insightful
    "totally anonymous" - it is (or can be), the cards store no personal information (unless you attach it to your credit card which has limited personal info on it)

    "never expires" - it does? thats not what the article says...

    "never gets damaged" - all physical currency only exists in a physical and damagable form, paper rips, burns, gets washed... plastic money isn't especially sturdy and who wants to keep massive volumes of coins?

    the money card would have a database (physically located in several places across the country/world) which is something physical cash cannot offer - a backup

    sounds to me like this money card is just as anonymous, safe from expiry and damage than normal cash....

  12. What about ad-hoc cash transfers? by Anonymous Coward · · Score: 5, Insightful


    I don't see how this is addressed.

    (1) What if the babysitter comes to my house and I owe $4.50. Do we both go to the nearest ATM to transfer onto our cards? Will I have a card swipe in my house (most probably not).

    (2) The joke about lap dances someone made before my post actually rings true. How does one pay for these kinds of impromptu needs? How do I loan a friend $1 to get a bottle of pop? Do I give them my card to borrow? Would I give them my wallet? Maybe lap dancers will have card swipes strapped on ... somewhere ... for easy payment.

    (3) What about counting your cash? Simply, how do you know how much is on your card without going to an ATM to get a readout?

    (4) How do you give the kids a few dollars to shop or grab a bite? How do you give them one dollar to grab candy before the movie starts? Do you give them the entire card? Again, do you give your entire wallet / purse for a need like this?

    (5) If a card gets snapped in half, then what? When a paper bill is ripped, a taped one is still legal tender. What about cards?

    (6) Can someone run a bulk demagnetizer over my card and financially wipe me out? This is a serious concern, folks.

    How are these simple needs addressed? I also like to think that the days of paper money are numbered -- but how are these needs met?

    Maybe withdrawing all paper cash $5 and over, converting US dollar bills to a system like Canadian $1 and $2 coins for small change needs? Coins are much more convenient than paper that gets folded, spindled, mutilated, torn, etc.

  13. Re:Australia hasn't had paper money for 10 years! by Bitsy+Boffin · · Score: 3, Interesting

    Dunno about in Australia, but here in NZ we introduced polymer notes a few years ago, and they sure aint paper, damed tuff stuff - sure as hell can't tear it.

    --
    NZ Electronics Enthusiasts: Check out my Trade Me Listings
  14. How can this possibly work? by mgrant · · Score: 2, Insightful
    Ok, let's think about how such a thing could be implemented...

    If the card's worth were encoded on the magnetic strip itself, it would be a matter of days before someone figures out how to hack the thing and add as much cash as they want to it.

    If, on the other hand, the card's worth were stored in some central location, the thing is not anonymous at all. There would be a centralied account somewhere (which necessitates some form of ID number by which people may be tracked), and there's no way guarantee that someone's not keeping track of transactions to and from that account.

    I would argue that such a card can be no more anonymous that a standard debit card, which most of us carry today.

  15. Who gets the float...as if I need to ask by hazman · · Score: 3, Interesting

    The problem I see with these cards is that you essentially buy them from a bank.

    Let's say you buy a $100 dollar card from the bank. The bank transfers $100 from YOUR account to their account from which it can be used by the bank to loan to other customers and earn interest (mortgage loans, auto loans, credit card loans, etc). So if it takes 2 months for you to use up the $100, you've "given" your capital to the bank to use for two months.

    On top of the banks getting the "earning power" of your $100, they charge you to get your capital back through transaction fees! So at a minimum, the bank makes 50 cents on every card it "fills up". If it takes you two months to use the card, they get up to ~$2.00 more!

    On top of all that, what happens to the money that never gets used, lost cards, broken cards, cards that have only 50 cents left on them so they get tossed into glove box. I'm sure the banks won't let go of that "unclaimed" cash without a fight.

    No, I'll continue to use my ATM card that's linked to an interest bearing checking account, even though its a microscopic rate and live under the illussion that I have control of my cash.

    1. Re:Who gets the float...as if I need to ask by Drakonian · · Score: 4, Informative
      The bank transfers $100 from YOUR account to their account from which it can be used by the bank to loan to other customers and earn interest (mortgage loans, auto loans, credit card loans, etc). So if it takes 2 months for you to use up the $100, you've "given" your capital to the bank to use for two months.

      Huh? Do you think that currently when you have x dollars in YOUR bank account, the bank does not touch that money and keeps it safely secured for you? Or do they loan it out to other customers and earn interest? Of course the latter - that's how banks work!

      --
      Random is the New Order.
  16. Re:Australia hasn't had paper money for 10 years! by vivian · · Score: 2, Informative

    Actually it is definitely plastic - the notes don't crease in the same way paper does, they are hard to crumple and very resistant to tearing - they tend to stretch slightly if anything.

    Best of all you can go for a surf with $5 in your back pocket and buy a pie & chips for lunch without having to leave a wallet on the beach.

    The plastic money is also much harder wearing than paper money, lasting 5 to 10 times as long, and I have yet to see a nasty crumpled and dirty note like you get with paper money. (Dirt & grime doesn't stick to it very well)

  17. Re:You keep all your money in cash? by Jason1729 · · Score: 3, Insightful

    With the card, you won't know if you have to go to the to refill it. Nobody knows exactly how much cash they have, and with a card, it's too easy to forget a few purchases and have less than you expected.

  18. CNN's cluelessness by xigxag · · Score: 4, Insightful

    From the article:

    Because the basic Moneo card is anonymous, there are no privacy or identity theft concerns.

    Regardless of whether the "basic" card is anonymous, it's still clearly possible to track the card's use, and by extension, its user, who has to be identified to obtain the money to begin with.

    Step 1) $100 were downloaded from John Smith's bank account to card #12345

    Step 2) Card #12345 was just used to purchase $80 worth of pr0n.

    Step 3) Bank sends John Smith a bunch of porn-related junk mail.

    The retailer might not be able to ascertain John Smith's identity, but the bank most likely could, if it were part of the network.

    And the government certainly could. Not familiar with France, but in US translate "could" as "would."

    I hope someone can contradict me here. In particular, I'm wondering if there's a way to anonymize Step 1, such that: 1a) $100 is transferred from John Smith's account to a special secure escrow network which is holding money from many pending transfers. 1b) ATM 385 is given authorization to loads up a card with $100. 1c) ATM 385 loads #12345 with $100 drawn from the escrow network. 1d) After transaction is complete, all bank knows is that $100 is gone from John Smith's account and given to ATM 385. All ATM 385 remembers is that it loaded $100 onto card #12345. It doesn't remember the account it was originally taken from. Does this make sense?

    --
    There are two kinds of people: 1) those who start arrays with one and 1) those who start them with zero.
  19. A Cash-Free France with the Moneo Smart Card? Don' by rpiquepa · · Score: 3, Informative

    In this column, you can read what I thought about this. "About a week ago, my bank asked me if I wanted a new plastic card, named Moneo. This card would be dedicated to small purchases, like newspapers or a french baguette. My bank also asked for 10 euros per year for the card..." Personally, I don't think Moneo will be successful except if it's free. For more details, check this BusinessWeek article or the official Moneo website (in french). Roland Piquepaille.(http://radio.weblogs.com/0105910/)

  20. Why so many different standards? by Kinniken · · Score: 5, Informative

    As a french pro-european, I'll amazed at the short-sightedness of the various european govs in supporting those cards.
    As pointed out in numerous posts, cards like this exist all over Europe... and yet, AFAIK, none are compatible.
    Think about it: with the Euro, I can go in any of the 12 participating countries and pay with the same money, without any problem. With this great cool new gadget, I'm limited to a few shops in my own country. Oh, and I kinda like the euro coins, it's fun to see some from 12 different countries mixing in my pocket. This thing is just a bit of plastic. And it's expensive too.
    Needless to say, I'm not getting one before I can use it all over the EU. And before it gets cheaper, as well.

    --
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    1. Re:Why so many different standards? by Anonymous Coward · · Score: 3, Insightful

      Amen to that! I live in the Netherlands, and we have not one but two similar (and afaik incompatible) systems: Chipper and Chipknip.

      Now the banks are desperately trying to make their cards more popular by *requiring* them for certain transactions. For example, in some cities they have made deals so you can only pay for parking using one of those cards.

      I received mine years ago, and I have *never* used it for anything (I haven't even put any money on it). I find normal money is just as (in)convenient, and I do not see any good reason why I should switch to this fake money.

    2. Re:Why so many different standards? by Anonymous Coward · · Score: 2, Informative
      Amen to that! I live in the Netherlands, and we have not one but two similar (and afaik incompatible) systems: Chipper and Chipknip.


      Chipper is dead now. The Postbank has stepped over to Chipknip, so now we only have one cardsystem left that nobody uses unless there isn't any other choice... The idea is good, but there is a grave lack of users here...

    3. Re:Why so many different standards? by jsinnema · · Score: 2, Interesting

      Kinniken wrote: >Oh, and I kinda like the euro coins, it's fun to >see some from 12 different countries mixing in >my pocket. You can have a look at the the euro coins from 12 different countries and Monaco, San Marino and Vatican City here: http://www.euroswapper.com/euro_coins.html Greetings, jsinnema

  21. Person to person payments by zander · · Score: 2, Informative
    What is not immidiately obvious from the story (which lacks any and all technical details) is that the merchent has about the same card as the customer; it can contain a maximum amount of cash and the card reader does nothing but transfer cach.

    A safe encryption based handshaking requires an additional 'master card' with the intelligence to do the transer inside the reader. So its very unlikely your local homeless will walk around with a reader :) But it is possible!

    Point is that the card of the merchent has to be emptied at the bank as well, and why is this important? Well; the bank has absolutely no way of tracking transactions to real persons.

    This is the beaty of the system; in contrary to all electronic payment systems; this is the only one that actually makes your payments more anonymous.

  22. Netherlands.. already here too.. by derekb · · Score: 2, Informative

    We've got our 'Chip' cards already. They're wickedly convenient. 500 Euro limit, reloading machines all over the place, can use them many places - even raunchy ron's and parking meters.

    I don't use chip cards where I would use paper money - I use PIN (my bank account) for these so I will have a limit. The Chip cards are great for places you would ordinarily carry around loose change.

  23. Re:You keep all your money in cash? by mpeeters · · Score: 4, Informative

    Don't know about France, but here in Belgium we have a little keychain gizmo in which to insert the card and it tells you the amount you just purchased, as well as the last couple of transactions (just the amount).

    --
    Research is what I'm doing when I don't know what I'm doing.
  24. Danm�nt by dybdahl · · Score: 3, Informative

    This was introduced in Denmark a couple of years ago, but it failed to get broad appeal.

    If you want to see how to bring down the amount of cash that people have, you should have a look at the Danish "Dankort" system. It is because of that system that Denmark has the lowest amount of cash in circulation compared to the size of the economy. Personally I almost never carry any cash around.

    http://www.dankort.dk/ (Danish)

    The Dankort system is an online system with identity, but it has been constructed in a way that makes almost anybody able to get it. Of a population of 5 million, there are 3.3 million Dankort. If you subtract the children and the very old people, you'll find that almost anybody uses it.

    Lars Dybdahl.

    1. Re:Danm�nt by greenius · · Score: 2, Informative

      On the negative side, the Dankort makes things difficult for foreign visitors to Denmark. Many shops such as grocery stores only take Dankort and cash... they don't take Visa or Mastercard.

      When I was temporarily living in Denmark I found myself using cash for almost everything, and having to carry thousands of Krone around with me. I was unable to get a personal Dankort from a bank because I didn't have a CPR number (the equivalent of a US Social Security Number).

      --
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  25. Fatal Flaws - Not quite. by Fruny · · Score: 5, Informative

    Since smart cards in France all incorporate a chip, their magnetic strips are rarely used. Thus, even if the strip id demagnetised, so long as the chip is OK, the card is OK too.

    And hopefully, it takes more work to mess a chip up than a magnetic strip.

  26. Re:Claimed anonimity is bogus by evanbd · · Score: 3, Interesting
    Not neccessarily true...

    Though I imagine you're right for this implementation, it is possible to build a digital cash cryptosystem that is as anonymous as cash. I believe Bruce Schneier covers the basics in Applied Cryptography; we went over it in an intro cryptography course I took, and I think that was the source.

    The basic system is that the bank signs individual units of value (think individual bills). You then insert your card, and it transfers several of them over, gets change if needed, etc.

    For the more detailed explanation (somewhat):
    You, the party desiring cash from the bank, begin a transaction to create a bill. You tell the bank the account number to take the money from, and prove you're you through whatever standard techniques. Then, you create a handful (say 10) "bills"; they're real bills, minus the bank's signature. You give them each a randomly chosen 128 bit id (128 bits is enough to avoid collisions, globaly -- but you need a good source of randomness). Then, you blind each bill with a new random number. Then, you encrypt all the bills, using a different key created only for this purpose. This extra key will be thrown away when the transaction is complete. The blinding and encryption work such that you can only recover the original text with both the key and the blinding number. The bank then chooses one bill, signs it, asks to see the blinding numbers on the other 9 and also asks for the decryption key. The bank verifies that the other bills are valid, and can assume the tenth is too. They sign it and return it to you. You decrypt it and deblind it. The math works such that the banks signature is still intact. Basically, using RSA, encryption and decryption are exponentiation, and blinding is multiplication (all done modulo the key).

    The bank has now signed your bill as being worth money, without knowing the id number on the bill.

    This system is rather complicated, and it is unlikely something equivalent has been implemented in this case. But it is possible to do it right (just hard). I've simpleified a little, but the major pieces are there.

  27. Australia's plastic money is much better.. by Large+Green+Mallard · · Score: 4, Interesting

    All of Australia's banknotes are made out of plastic. Which gives them the advantage of last a sodding long time...

    Australians or anyone with them.. the first two digits of the serial number are the year of manufacture. I have a $20 made in 1994 and another from 1998. I jut got some 2002 date $20s.. ei, they only need to print new $20s every 4 years :) Granted, $5s last a lot less, but it's still a whole lot better than paper (cotton pulp) notes.

    Of course, they spring around like no-body's business and are absolutely frictionless, but the concept is so cool! :)

    Pictures at -> http://theducks.org/notes

  28. Time to go to france... by Psyko · · Score: 2, Interesting

    Looks like it's time to grab the ole' smart card encoder and head over the pond... Has anyone even taken a look at the security on this?

    Smartcard reader/writers have been available to the general public for quite a few years now (The Eltron 310 does full color card printing, mag encoding, bar codes and smart card encoding in one box for $3k), and you can find schematics on how to build your own all over the place.

    --
    01:36AM up 426 days, 2:46, 1 user, load average: 0.14, 0.11, 0.05
  29. Faking the card by kbonapart · · Score: 2, Insightful

    Alright, there is a small microchip in the card that keeps track of how much money is on it. What's to stop l33t hax0rs from tooling around with a Mr. Electricity Soldering Kit and changing how much is on it? Or better yet, an adaptor that fits into a laptop that let's you add cash with a couple of keystrokes?

    --
    There are no gods but ourselves.
  30. In socialist Canada, the card cashes you! by evil_one · · Score: 5, Informative

    Seriously though, this is just silly. By now everyone has heard of 'Debit Cards' and I would think that a fair number of /.ers have paypal mastercard debit cards.
    Well guess what?
    Canada has been there for years.
    4 out of 5 stores (or in a mall, every store) has Interacmachines. Direct debit, pin protected, and ANY bank card on the interac network works on it. That is every major bank in Canada, almost all the little ones, plus most credit unions.

    Explain how a pin protected card (which is cancelable by phone) is better than this 'new' french system? I mean, their system is just basically a revamp of european phone cards.
    The only benefits the french system has over Interac is anonymity - As for that, we do still have cash for that, or in the case of a true cashless society, just trade in precious minerals. (eg, gold.)

    By the way, Interac direct payment has been rolled out since `94

    --
    Desperation is a stinky cologne
  31. Re:The End Of Paper Money? by annoyance · · Score: 2, Informative
    The smart card is like a filesystem; with different levels of access. The card controls access since there is a computer on it to.

    They programmed it so that you can access the money at all times but you need to enter the pin to even see the bank account or name of the user.

    Yes its totally anonymous.

    The card is completely self containing; there is no communication to the bank needed.

  32. SOunds like an ATM. by atgrim · · Score: 2, Insightful

    You have a piece of plastic. Used as a debit, the transaction is completed immediately, as in, the funds are withdrawn from your account. Id used as a Visa/Mastercard, the funds take a few days to withdraw. Personaly, I would not use it as the supposed lack of security. Also, from the paranoid aspect, Big Brother could track every transaction made. Isn't that what our US Gov't is trying to do? I happen to like my privacy and to those people who say "well, if you havn't done anything wrong, you have nothing to hide." I say take a flying leap.

    --
    Your actions in life will determine your children's future.
  33. You buy cash vouchers... by hughk · · Score: 2, Interesting

    I know this is funny but here is what actually happens at a particular club in Europe, Golden Dolls in Frankfurt.. You buy "Golden Dollars" (Note: not euros) with your Credit or Debit card, you insert said "Dollar" into lady's whatever. Lady exchanges said "dollars" back for real money at a house discount. Cash tipping isn't permitted.

    --
    See my journal, I write things there
  34. The Killer App by Anonymous Coward · · Score: 3, Insightful

    We have these here in Germany too called "Geld Karte" (Cash/Money Card). They are mostly embraced by the Sparkasse, while most of the major private banks are reluctant to give them to you.

    They are used for some aplications and there talk to add an age authentication system too them for the purpose of proving you age to cigarette vending machines. There is also talk to intengrate Crypto functionality so that you may digitally sign documents with them.

    However in my mind the killer app would be to be able to use them cheaply for micro payments on the internet.

    However to be widely accetable these would have to:

    a) Be secure virtually - no electronic counterfitting

    b) Be anonymous - Imagine Grandma giving the kids some money triggering an automatic I.R.S. audit. Let that happen once and they are out of buisiness

    c) Be cheap. Real money is not for free either since there is considerable labor involved in handing out the money, accounting for the cash and buisiness has to buy insurance against theft.

    d) Hardware has to be cheap too. By law the electronic signature has been available for years how every no one is using it since the cost of hardware is just too high. However with a cheap mass market reader there is no reason why this should no become as widely available as floppy drives are now (Sorry Mac Fans no pun intended). By the way as if did read that there is nothing TCPA can do which can't be done with a smart card reader, accept selling new hardware since smart card readers can be bought as an upgrade...

    Currently there is one big drawback in all of these systems: All of them require the end user to bear most of the cost of deploying them (they have to pay for the class 3 reader and the smartcard), while buisiness saves a lot of money because processing is way cheaper.

  35. Tried and failed in Sweden by MungoBBQ · · Score: 3, Insightful

    A system similar to this was rolled out here in Sweden a couple of years ago - CASH as it is aptly named. Now, about 4 years later, it's all but dead since nobody thought it was a good idea. As far as I can see, the only thing people use these cards for these days is parking meters.

    I think it failed here because of a few simple reasons. People here were actually smart enough to see that a major reason for the banks to try this approach is for them to make more money without any benefit to the customer. Doesn't it sound like a banker's dream? I can hear the banker's going:

    - I've got a great idea! We'll make our customers keep all their money - including their cash - in our bank, but we won't pay them any interest on that "CASH"-card.

    - Sweet! And why don't we charge them a small fee to obtain the card in the first place?

    - They won't know what hit them!

    Sure, it sounds great with a cash-less society, but until the system is free to use and has all the advantages of cash, it just won't catch on.

  36. Re:The End Of Paper Money? by spongman · · Score: 5, Insightful
    Mever gets damaged? Okay, paper money is pretty tough but it's less than perfect. It's expensive to make (okay, it's not Roman gold, but...) and it's only purpose is to indicate a number. In this 'enlightened' age we have much better ways to remember numbers than peices of paper. The Romans originally used pieces of Gold to represent the bearer's worth, but they quickly realized that it wasn't what they carried that was important, it was what those coins represented, hence the transition to minted coins of lesser metals, and much later to notes of paper we all know and love too much.

    The anonymity of cash is attractive, definitely. And it's current durability is impressive, and in most countries guaranteed. But really, it's a pain in the ass. You have to finger through your wallet for the right notes and then you invariably receive a bunch of coins that you don't want to carry around.

    Wouldn't it be mcuh easier to swipe some card that doesn't require a PIN, doesn't contain any personal info, is as tough as your VISA and doesn't require a phone/data call to some central service?

  37. The black market is the answer to the success by Xipe66 · · Score: 3, Insightful

    The database part sounds an awful lot like it could be used to trace transactions - thus not making it ideal when you want to pay off illegal labour, buy a car under the table to get away from state tax, or convert those drug millions you made on the street into something mroe useful than an e-card to you (i.e. a house, gold, bearer bonds).

    e-cash will never take off until people can be 100% sure they can use it in dubious (viewed more or less illegal by the state) activities - like tax evasion, black labour, illegal gambling, drugs, etc.

    Money still seems like a safer bet since it can't be backtracked - for a system like this to work they need to be able to see and check the transaction history (lest a Slashdotter will crack the card and start making his own money - thus they need to be able to check and verify all transactions so no "creative" money has arrived on the card).

    --
    Civilization is the process of setting man free from men.
  38. In Switzerland... by UncleAlias · · Score: 3, Informative

    We have had a similar system in Switzerland for several years now (about ten, maybe a bit less), which is simply called "Cash".

    I think it comes more or less standard with all bank cards, and it's free (techincally; maybe the bank charges for it as part of its general services, but the name "Cash" doesn't appear on my invoices.

    I've been using extensively for the past year, and while it has some definite advantages, I don't see that replacing paper money for quite a while.

    The good side:

    - It's fairly easy to use; put it into a Cash-aware ATM (most are), transfer up to CHF 200 (ca. USD 150), and then insert it into a Cash-aware machine, hit "OK" and you've paid.

    - No need to have the exact change anymore; very convenient for bus tickets.

    The bad side:

    - Not many places are Cash-aware: bus ticket machines are, some shops are (newsstands, for example), and that's about it...

    - If someone steals my bank card, he or she can empty the card's Cash without any control; but since the amount is, at most, CHF 200 and there is only so many bus tickets one can buy, it's not that big a problem; besides, it works the same with paper money...

    - Although quite fast, the system is not instantaneous: transactions can take up to 10-20 seconds; that's fast, except when the bus doesn't wait...

    - As far as I know, the different national electronic cash systems are not intercompatible; hence, what works in Switzerland will probably not work with the French "Moneo" or Belgian "Proton".

    All things said, it's quite convenient for small purchases and bus tickets, especially the "no exact change necessary" part. but it's still quite limited. Don't expect "Cash"- or "Moneo"-like systems to completely replace your paper-and-nickel money any time soon.

    --

    Stéphane "Alias" Gallay
    Now, where did I put this witty quote?..

  39. Re:Europe already has stopped using paper money. by nagora · · Score: 2, Interesting
    The Euro bills are made of a paper that consists of mainly cotton.

    High-quality paper is always made with linen, cotton and other natural fibres. It is a common misunderstanding that "paper" is synonymous with "wood pulp".

    TWW

    --
    "Encyclopedia" is to "Wikipedia" what "Library" is to "Some people at a bus stop"
  40. Re:The End Of Paper Money? by Aceticon · · Score: 4, Insightful
    the money card would have a database (physically located in several places across the country/world) which is something physical cash cannot offer - a backup

    For smart-cards, the most up-to-date information about how much money do you have in it sits in the card itself:

    If you loose your card you loose the money you have in it. Whoever finds the card can use the money in it. (just like cash)

    Also if you damage the chip in the card you loose the money in it. Same as if you burn some dollar bills:

    • With the smart-card your bank ends up with the money ('cause the real money in circulation in smart-cards is actually being kept in some special account until it is transfered from a shopper's smart-card into his bank account).
    • If you burn some dollar bills the value of all other dollar bills in circulation slightly increases.
  41. Great! by peterpi · · Score: 2, Funny
    I've thought up this brilliant alternative to money. You'll get these sheets of paper that you can use instead of regular money. No information will be stored on it, so transactions will be completely private. For smaller amounts, little metal tokens could be used. They could be different shapes and colours to help tell them apart.

    Pretty neat, don't you think?

  42. How it works by Paul+Johnson · · Score: 4, Interesting
    These things have been around for a while. They depend on two things:

    1: Secure chip cards.

    2: Public key cryptography. This post assumes you know the basic concepts.

    IIRC the protocol works (roughly) like this.

    1. Card 1 says "I am a genuine card. Here is my public key and a certificate for that key issued by the bank."
    2. Card 2 says "I accept your certificate. I am also a genuine card. Here is my public key and certificate."
    3. Card 1 says "I have decremented my cash register by $5. Please increment your cash register by $5. Signed: Card 1."
    4. Card 2 says "OK."
    This transfers $5 from card 1 to card 2.

    Step 3 is the critical one. If that message gets lost then the $5 is lost as well. Of course a real protocol will include nonces and resends so that a single lost bit won't destroy your money.

    This has applications beyond just replacing cash. People have been looking for a way of making small transactions over the net for years. These cards are potentially it. Plug a card reader into your USB port, put a similar one on a server somewhere, and you can purchase information off the server, paying by the page if you want. Conventional credit card transactions have high fixed costs. The costs on these cards are very low.

    (Actually the server will probably have a PCI card with a high-speed, high-capacity version of the chip. But the principle is the same).

    On security, PKC is the easy bit. Securing chip cards is much harder. If you can spoof a card into accepting messages from something other than a real card then you can forge money untraceably. To do this you either have to extract the private key from a card or find some other way to increment its cash register. Both of these need tamper-proof cards. The techniques for doing this are too many to go into here, but you need to worry about power supply signalling information about the processes going on in the cards, and random errors induced by putting the card in a microwave oven (no, I'm not kidding) giving information away too, in addition to raw physical attacks like stripping off the plastic and using very fine patch leads.

    The biggest weakness is that any card is potentially an entry point to destabilise the entire system. I suspect this is the real reason for the $107 limit: cracking a single card would give you as an individual considerable wealth, but moving that wealth into the rest of the financial system by (e.g.) depositing it at a bank would show up in odd deposit patterns long before you could "forge" enough money to destabilise the economy. Also the individual who does this has every incentive to keep it quiet: not only has s/he committed a crime, but everyone in the know is a potential blackmailer.

    Of course someone might find an easy crack and publish it. This is probably the worst case scenario. The only solution is to recall the cards and go back to cash until the problem can be sorted out. Again, the card limit helps put an upper limit on the cost of this.

    Paul.

    --
    You are lost in a twisty maze of little standards, all different.
  43. Ease of use of Cash wins out.... by Chanc_Gorkon · · Score: 2, Insightful

    Examples:

    Salvation Army Bucket
    The bum on the corner
    The Hot Dog Cart
    Birthday cards
    Yard Sales

    There are lots of stuff we just drop cash into. Going to a card will make these transactions impossible or too expensive to make it worth your while. Personally, I would not mind having something like this except I already have it....my debit card. If I am making a transaction I don't want the bank to know where I was, I get cash at the ATM. I guess I might be a terrorist if I don't want my bank to know I shopped at Bernie's Pleasure Palace and was buying porn or a marital aide.

    --

    Gorkman

  44. Re:FP by hcdejong · · Score: 2, Informative

    No, it's "Verbing weirds language".

  45. The AntiChrist is smiling... by adzoox · · Score: 2, Funny
    "In the time of the end, none, no not one; free or bond will be able to sell unless they carry the Mark of the Beast. This number shall be recognized on the palm of the hand or the center of the forehead. All those who do not carry it will surely be put to death." Book of Revelation ~ Bible


    Credit cards were a major step forward, but no one really considers them, "the Mark of the Beast" - this technology though is easily transferrable from a card in the hand to more secure "retina scan money" or "thumbprint money" - think about how these technologies are already being marketted. Think about how MOST 40 and unders would think, "Wow I will never get robbed and don't have to carry around a wallet anymore!"

    Leave it to the French to lead the way in a move towards the end by A) Not leading to fight AntIchrists (Saddam) B) Leading the way for the "AntiChrist's monetary system" to become a reality.

    --
    Yell & scream & rant & rave... it's no use... you need a shaaaave ~ Bugs Bunny
  46. Voting by nuggz · · Score: 2, Insightful

    Can this be applied to anonymous voting?

  47. Moneo... by herberts · · Score: 2, Informative

    Well Moneo is really a wide scale operation of the banks to get paid for what they can't now, namely the cash you carry.

    Moneo works this way, with your credit card (visa/MC), your bank will offer you to subscribe to Moneo for a yearly fee (around 10 EUR/USD), if you do so you can load up virtual cash onto your credit card (smart cards in France), up to 100 EUR.

    In order for a shop to accept Moneo payments, they need a terminal rented by their bank for a monthly fee. The terminal will accept either credit cards or Moneo or both. You give your card, the terminal asks for your choice of Moneo or Credit and you can proceed with the transaction. Please note that the bank receives a fee for each payment done on the terminal, this fee being paid by the seller. If your balance is considered low by the terminal you will be offered a reloading of cash onto your card, this is something that interest the seller as this time he will receive a fee paid by the bank if your reload cash at his terminal.

    If we sum up the whole system:

    * customer pays a yearly fee for Moneo.
    * shop owner rents a terminal to its bank for a monthly fee.
    * on each payment a small fee is paid by the shop owner to the bank
    * on each refill the bank pays a small fee to the shop owner
    * if you loose your credit card with moneo, the credit card might be barred but the Moneo cash can still be used (you might loose up to 100 EUR)

    So the real question is, why not simply make shop owners accept credit card payments for real small fees instead of setting up such a system ? The answer is simple, because the Moneo system is all profit for the banks, not for the consumer or shop owner, the BANKS!

    And in order to deploy rapidly the Moneo system, the german technology was choosen (Geldkarte, 56 bit DES crypto!!!!), which means no PKI and rather weak crypto.... But the banks don't care, it's not their money, and very often all card loss insurances will not cover the money loaded onto Moneo....

    With all thos elements my choice is clear, Moneo, NO!

  48. Recapping it - for lazy /.ers by ThufirHawat · · Score: 4, Funny

    OK, so here's the rundown on it.

    Postings belong to one of these categories:
    a. Parochial bum
    Std posting: " Here in Upper Slobbovia (or Ruritania, or whatever) we used this for well-nigh seven centuries, but not everybody(or everybody) uses it".
    b. Yank yokel
    Std posting: "How can it work if it doesn't do a central DB query every time? What if the DB is down? [after the slammer crashing of the Bank Of America ATM network]" (Because of the very primitive US banking system, yank yokels believe that the rest of the planet is as backward as they are).
    c. Turbonerd
    Std posting: "Goodness, in order to work properly and be anonymous one has obviously to do a QCM triple encoding for every non-null challenge in any transaction. You see?"
    d. Impatient twit
    Std posting (by the 300th time that somebody wonders how can you know how much money you have left on the card): " We have this device, see, where you put the bloody card and it will tell you how much bloody cash you have still left".
    e. Know-it-all clown
    Std posting: this one...

    As a result, I don't know anything I didn't know before. I only know now that we live in a far more parochial and chauvinist world than I previously thought...
    And yes, I live in Belgium and I have used the useless stupid thing which increases banks' profits zillions of time...

    --
    Thufir Hawat
    Part-time Mentat
  49. Re:How much is on my smart card? by praksys · · Score: 2, Insightful

    So, unless there is a "killer app" - like the parking meter - or universal acceptance (eliminating the need to also carry cash) I don't think it'll take over.

    Great point. The only place I have seen something like this take off is Hong Kong, where the killer app is public transportation.

    Once everyone uses them then your argument about always having cash turns around. If you have to carry one of these cards anyway then why not start using it, rather than messing arond with coins and such. Also most vendors actually prefer not to deal with cash (added risk and expense - unlike you they actually have to pay for cash handling services) so once all or most of their customers have these cards they have a strong incentive to start accepting them.

  50. Re:CNN's cluelessness/MY cluelessness... by xigxag · · Score: 4, Informative

    I'm the writer of the parent post, which is currently rated highly but is nevertheless quite wrong in its description of the implementation of the procedure. Others have corrected my misunderstanding, which, if I'm not still mistaken, goes something like this:

    Step 1) $100 are downloaded from John Smith's bank account to user card #U12345.

    Step 2) Smith approaches Adult Store merchant with $80 worth of embarrassingly large and bumpy sex toys.

    Step 3) User Card #U12345 securely transfers $80 to Merchant Card. This transaction takes place off of a network.

    Step 4) Smith walks away with sex toys in black plastic bag. Bag later breaks on the bus, contents come spilling out.

    Step 5) Merchant subseqently uploads large sum of money (including Smith's $80) to bank. Bank is unaware of original sources of money.

    It's the fact that Step 3 takes place without authorization from a central network which makes this anonymous and potentially superior to a regular debit card transaction.

    Please "securely transfer" my mod points from the parent post to this one. Thanx!

    I'm wondering about other form factors now. Would it be more practical to have a user "card" in the form of one of those keychain thingies? Or perhaps a bracelet with a tiny dongle that plugs into the merchant's reader. Further, the user ought to be able to require mandatory PIN usage on his/her card. It won't help if the card is lost, but at least no-one else could profit from your misfortune. Put your name and phone number on the card and it might actually be returned to you. Finally, what's to stop this anonymous transaction from being the basis of a money laundering scheme? And if there is nothing preventing it, what are the odds that this would be allowable in the US?

    --
    There are two kinds of people: 1) those who start arrays with one and 1) those who start them with zero.
  51. Nope by istartedi · · Score: 2, Interesting

    The money is anonymous, but it's numbered.

    A legitimate "add cash" operation leaves a record in the database.

    When the user tries to pass the counterfeit card, the database is checked and when it finds, for example, that "card 0x8782a321=54.21" but the card says "card=100.00" the POS terminal knows it's counterfeit. The integrated security camera clicks on, homes in on your face, and e-mails your picture to the authorities.

    I like that. We in theory could do this now with old-fashioned bills. One camera (with a *very good* machine vision system) looks over the shoulder of the cashier. Camera one is looking at the serial numbers of the bills. Camera two is looking at the customer.

    Camera one is hooked into a database that tracks the locations of bills and serial numbers (think WheresGeorge on steroids). If the system discovers a bill passed with SN that isn't in the database, or that is already in a till someplace else, the customer becomes a counterfeiting suspect. This obviously requires some sophistication. For example, a bill may not be in the till anymore, but if it left the till in Hawii, and enterred a till in Maine 45 minutes later, you know the bill in Maine is counterfeit. The program would obviously have to be updated if commercial hypersonic transports ever became available (!).

    Such a system won't catch a counterfeiter every time, but the odds would catch up with him. A more cumbersome system that doesn't use machine vision and requires the cashier to run bills through a scanner could probably be implemented in a much shorter time. Building RFID tags into the money makes even better sense if they are robust enough, but ongoing passage of "microwaved" money would make you a counterfeiting suspect even if your money was being legitimately zapped..

    I like this. It is, in some ways, the antithesis of "the beast" because they are numbering the money as opposed to numbering the people.

    --
    For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
  52. USELESS! by Eric_Cartman_South_P · · Score: 2, Funny
    How the hell am I supposed to snort my coke?

  53. The Balance of Four Problems by LaCosaNostradamus · · Score: 2, Insightful
    Jeebus! Digital cash ... welcome to one of the most pervasive myths of the digerati. One good thing about all these permanent layoffs in the IT industry is that there will be fewer of the technology-intoxicated yuppies that dream of this kind of stupidity.

    Digital cash is a terrible mistake:
    1. You can't loan someone 5 bucks.
    2. You lose privacy.
    3. Your card can be duplicated.
    4. A software or electrical error can wipe out your money.
    These points counteract each other; if you attempt to solve one of them, the other problems grow larger.

    One thing that seems to underlay the digerati's love of digital cash is a lack of understanding about counterfeiting. Falsifying paper currency is difficult ... it's analog technology. About the only common counterfeiting scheme that works nowadays is the passing of bad copies of twenty-dollar bills in dimly-lit bars (I work in a bank; the word is getting out about this kind of thing). This contrasts to duping cards. It's just data; if it is open to inspection then it's open to hacking and duping. And if that's not the case ... then we're talking centralized controls, so please see the list of problems above.

    Digital cash, shit! ... you know, I read Omni magazine in the 80s too, but many aspects of the featured technocratic futures are inhuman and not only shouldn't be adopted, but can't. Human society is far too vicious and unstable to make such futures workable. Technologies that can be used for tracking, will be, and then will be used to attack the lower classes. Before such methods gain momentum, societies crack apart in warfare.
    --
    [You have a stable society when some nut guns down a schoolyard and the law doesn't change.]
  54. Re:You keep all your money in cash? by AKnightCowboy · · Score: 2, Funny

    Well, I don't trust banks. As soon as I get my check I convert it to cold hard cash and use it to buy durable goods that I can easily trade for other goods in an emergency. Frankly, with the upcoming global war I would recommend converting at least 75% of your income into ammunition and canned goods. Remember, if possible, try to stay away from large cities where the radiation will be the strongest. It is very unlikely the suitcase nuke bombers will target farms and rural areas and instead will concentrate on large metropolitan areas. You may need to eventually contend with crop dusters filled with biological and chemical agents, but if you invest in decent small arms you should be able to take them out well before they can cause significant damage to the surrounding area. Oh well, gotta back to digging my bomb shelter before they deliver the air filtration system next week.