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Making Airport Scanners Less Objectionable

Hugh Pickens writes "The Washington Post reports that one of the researchers who helped develop the software for the scanners says there is a simple fix that would make scanning less objectionable. The fix would distort the images captured on full-body scanners so they look like reflections in a fun-house mirror, but any potentially dangerous objects would be clearly revealed, says Willard 'Bill' Wattenburg, a former nuclear weapons designer at the Livermore lab. 'Why not just distort the image into something grotesque so that there isn't anything titillating or exciting about it?' asks Wattenburg, adding that the modification is so simple that 'a 6-year-old could do the same thing with Photoshop... It's probably a few weeks' modification of the program.' Wattenburg said he was rebuffed when he offered the concept to Department of Homeland Security officials four years ago. A TSA official said the agency is working on development of scanner technology that would reduce the image to a 'generic icon, a generic stick figure' that would still reveal potentially dangerous items." Reader FleaPlus points out an unintended consequence: some transportation economists believe that the TSA's new invasive techniques may lead to more deaths as more people use road transportation to avoid flying — much more dangerous by the mile than air travel.

32 of 681 comments (clear)

  1. undo. by DjReagan · · Score: 4, Interesting

    If a 6 year old could do it in Photoshop, then the same 6 year old probably could undo it too. Just run the distortion with opposite paramaters (shrink where you stretched, and stretch where you shrank) and you end up with the original image again.

    I seem to recall a few years ago, a police agency cracking a child pr0n case by undoing a distortion made on the perpetrator's face in the images.

    --
    "When I grow up, I want to be a weirdo"
  2. Deadlier than the terrorists by ei4anb · · Score: 5, Interesting

    "... assuming that the radiation in a backscatter X-ray is about a hundredth the dose of a dental X-ray, we find that a backscatter X-ray increases the odds of dying from cancer by about 16 ten millionths of one percent. That suggests that for every billion passengers screened with backscatter radiation, about 16 will die from cancer as a result." "Given that there will be 600 million airplane passengers per year, that makes the machines deadlier than the terrorists." http://www.schneier.com/blog/archives/2010/11/tsa_backscatter.html

    1. Re:Deadlier than the terrorists by moggie_xev · · Score: 3, Interesting

      One comment was that because all the radiation is "reflected" off the skin then the effective does at the skin is much higher than that of a normal X-ray which is distributed across the body.

    2. Re:Deadlier than the terrorists by vlm · · Score: 4, Interesting

      You get about one mrem per kilomile when flying. Emphasis on the word "about".

      The problem with using "a dental xray" as a measuring stick, is depending on the technology level used, it varies by about one order of magnitude. Then there's another order of magnitude of B.S applied depending on which side you're propagandizing for, such as "do you mean per full dental set (and what is a full dental set anyway, it depends on insurance company, country of residence, and dentist preference) or do you mean per individual snapshot?). But as a total BS estimate over a large 1st world population you'll get about ten mrem per dental xray (although individual experience will vary by a factor of about 5)

      The mystifying part is my teeth are thinner than, say, my wallet or my belt buckle. Yet the nudie body scanner claims to use a hundredth the dose to hit an entire body. On the other hand a diagnostic dental xray is probably higher res needing higher intensity. On the other hand the efficiency of the flux (forget the name) is probably way the heck higher for a dental xray than a nudie scanner.

      I'm thinking just from a purely engineering standpoint, aside from all political statistical BS where both sides are lying to control peoples opinons, that they're about the same dose within an order of magnitude.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    3. Re:Deadlier than the terrorists by blueg3 · · Score: 2, Interesting

      An interesting analysis, but why does it assume a dose for backscatter X-rays? These should be well-known.

      Numbers I can easily find say 5-10 microrem. Dental X-ray is 2 millirem. So, that figure is off by a factor of 2 to 4. For every billion passengers screened, 4-8 will die from cancer as a result.

      Of course, the same background-radiation argument applies here as well, but in an interesting fashion. Added radiation exposure due to flying is something 0.3 mrem / hr. I have no data on hand for average flight time, but even if it's only an hour (which is a short flight), then for every billion airline passengers, 240 will die of cancer as a result of the added radiation. So, just getting on an airplane where nothing goes wrong is more deadly than the terrorists. Nature wins this round!

    4. Re:Deadlier than the terrorists by blueg3 · · Score: 2, Interesting

      One flight-hour of added radiation is about 30 times higher than than radiation from a backscatter X-ray, and the radiation from flight exposure is already below occupational exposure limits. It doesn't really make the health risk to crew any more substantial.

    5. Re:Deadlier than the terrorists by oldspewey · · Score: 2, Interesting

      Perhaps not, but it does have a 100% "this fucking sucks" rate. I opt out of enhanced imaging every single time I fly - not because I give a shit if some high-school flunky sees my junk - but because I see no compelling reason to increase my cumulative lifetime dose of radiation if I can simply avoid it by choosing the fondle option.

      --
      If libertarians are so opposed to effective government, why don't they all move to Somalia?
    6. Re:Deadlier than the terrorists by DZign · · Score: 2, Interesting

      "... assuming that the radiation in a backscatter X-ray is about a hundredth the dose of a dental X-ray, we find that a backscatter X-ray increases the odds of dying from cancer by about 16 ten millionths of one percent. That suggests that for every billion passengers screened with backscatter radiation, about 16 will die from cancer as a result."

      "Given that there will be 600 million airplane passengers per year, that makes the machines deadlier than the terrorists."

      http://www.schneier.com/blog/archives/2010/11/tsa_backscatter.html

      I'm no statistics genius but is his logic correct ? Scan of 1 person increases his risk with 16 ten mill%, so given a billion scans, 16 people WILL die ?

      As far as I know my statistiscs, in this type every scan of a person is a singular event that doesn't have a relation with the next one (ie throw a coin for heads or tails, and the chance is still 50% no matter how many billion times you've thrown before) ?

      Only if the same person is scanned a few million times he will die from cancer as a result ?
      But scan a billion different persons and the chance for each of them to die of cancer has increased an (insignificant ?) amount ?

    7. Re:Deadlier than the terrorists by blueg3 · · Score: 2, Interesting

      Dental X-rays are transmission X-ray images. The airport scanners are backscatter X-ray imaging machines, which use the Compton backscattering effect. Backscatter X-ray imaging is a newer technique that lets you use a very low X-ray intensity, but it can only image close to the surface of an object.

    8. Re:Deadlier than the terrorists by blueg3 · · Score: 2, Interesting

      If you assume linearity and have a large enough pool of people, the statistics are fine. If you increase the chance of one person dying by k and apply this to N people, then *on average*, kN more people will die as a result. (The standard deviation for the number of additional people dying is sqrt(kN).)

      Studied suggest that treating radiation exposure as linear at low exposure levels is reasonably accurate. This is the "there is no safe level of ionizing radiation" claim.

  3. Quick Fix - Remove the Scanners by rotide · · Score: 5, Interesting

    Seriously, since 9/11 we have gone from a "let the hijackers land where they want and don't fuss" mentality to a "kill the fucker" sport mentality. Hijackings, at least on US flights are a thing of the past. Sure, ok, finding an explosive is a good thing, but at what cost? The chances of being on a plane with a bomb are so tiny it isn't even worth worrying about.

    Lets go back to metal detectors to get the obvious and maybe walk bomb sniffing dogs through often enough to deter would-be "terrorists". Oh, and scan checked luggage all you want, just stop stealing from it, ok?

    Nude photos and fondling my (and everyone elses) man bits isn't making me feel safer, it's just making me want to fly less and make me loathe my government even more. I'm spending less and the government is spending more. What a great recipe.

  4. Re:Oh sure.... by Dan667 · · Score: 3, Interesting

    the tsa is already being swamped by pedophiles and sex offenders asking for applications.

  5. Re:Great...now just one more issue.... by dgatwood · · Score: 5, Interesting

    This would still not make it any less objectionable from my perspective. As long as the distortion is occurring in software, it isn't acceptable. As long as the non-distorted data exists for even a microsecond on some hard drive somewhere, the data can be:

    • stored for later examination without the distortion applied
    • sent somewhere else for later examination without the distortion applied
    • copied by someone who hacked into the computers

    And that's assuming that they don't just tell us that they're applying this distortion while not really doing so. Given the number of lies the TSA has told about these things so far, I don't trust these people as far as I can throw them.

    Only one thing will make these less objectionable: not using them. If you're going to blur the heck out of the image anyway, why not replace those $170,000 machines with $4,000 infrared-based thermal imaging cameras and be done with it? They're 1/42nd the cost, and they do the blurring in hardware due to the nature of the energy emissions being detected. They're also much faster than the TSA's expensive toys---you could walk through like you do a metal detector instead of having to wait for a scan---and they're passive, so there's no exposure to dangerous ionizing radiation (and before you say that this is a small amount of radiation, I'll point out that no amount of ionizing radiation is safe according to BEIR VII from the National Academies of Science).

    No, these unholy abominations have to go. They're a fundamental invasion of our privacy, and a perfect example of wasteful government spending.

    --

    Check out my sci-fi/humor trilogy at PatriotsBooks.

  6. Flying vs Driving by kcitren · · Score: 2, Interesting

    While it's most likely true that more people are driving vs flying for the holidays, I don't think the TSA is the reason. It's often cheaper to drive and, for flights under 2 to 2 1/2 hours, the time is basically the same [including drive time to airport, luggage pickup, and, yes, security screening]. I'm extremely doubtful that the airlines are losing business due to the TSA [not that they're not losing business because of other reasons: bad service, increased costs (i.e. luggage fees), decreased routes]. I seriously question anyone who says they're not flying because of the TSA's new scanners and pat downs. Most likely, they wouldn't be flying for other reasons. This is not to say there are not potential health concerns with the new full-body imagers, those do have to be addressed, especially to pilots and flight attendants.

  7. Italy is dumping scanners by protektor · · Score: 5, Interesting
  8. Re:Great...now just one more issue.... by troll+-1 · · Score: 3, Interesting

    if it is true, and flying is already safer than road travel, then why do we need all the security?

    Because folks have an irrational fear of flying. I mean, do you really need a live demonstration by a flight attendant on how to place the clip into the buckle? These procedures were written back in the day when Buddy Holly was a passenger.

  9. Only one way to make then less objectionable by elrous0 · · Score: 2, Interesting

    I want hot women TSA agents. Not only would that make it NOT be a problem, it would make it a BONUS.

    Oh and to be fair, ripped guys for the ladies. Just recruit a bunch of Jersey guidos and throw some (more) oil on them.

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
  10. Re:This misses the point by cplusplus · · Score: 2, Interesting

    The right to interstate travel without government interference has been upheld by the courts: flying is a right, not a privilege.

    Unfortunately, I bet a lawsuit with this argument wouldn't hold up in court. Pick any destination within the US. In all likelihood you can get to that same destination by car or other transportation that wouldn't require you to pass through an airport terminal. Air travel is just more "convenient" and I'm sure the counter argument would be framed that way.

    --
    "False hope is why we'll never run out of natural resources!" - Lewis Black
  11. Re:Great...now just one more issue.... by c · · Score: 2, Interesting

    > if it is true, and flying is already safer than
    > road travel, then why do we need all the security?

    Quite simply, because politicians and bureaucrats (a) aren't subject to the same security measures, and (b) don't worry about losing their jobs when entire families die in flaming car wrecks or train derailments.

    Of course, (b) ignores the fact than in reality, very, very few politicians and bureaucrats have ever been significantly punished for massive failures to protect people. But people are stupid that way.

    --
    Log in or piss off.
  12. Re:Great...now just one more issue.... by oldspewey · · Score: 2, Interesting

    The "per mile" argument is a bit of a red herring for all these reasons and more. In fact, many types of trips wouldn't even exist if it weren't for air travel. Later today, I am getting on a plane and flying ~3 hours to spend 3 days on a client site. There is no ground-based analogue for the trip I am taking. If it weren't for air travel, my job (or at least this component of it) wouldn't exist.

    --
    If libertarians are so opposed to effective government, why don't they all move to Somalia?
  13. Re:Great...now just one more issue.... by Sockatume · · Score: 5, Interesting

    Ascribing it to a malevolent elite (reptilians?) makes the problem intractible. It's easier to solve when you realise that the people making these horrible decisions are the same kind of hacked-together animal brain as the rest of us, operating on similar drives toward similar objectives. That's not to say there aren't malevolent entities amoungst them, but those are the parasites, not the organism, and certainly not the pathology.

    --
    No kidding!!! What do you say at this point?
  14. Re:Great...now just one more issue.... by Wonko+the+Sane · · Score: 5, Interesting

    they can accomplish much better kill and terror rates on other vectors

    Like blowing themselves up in the security checkpoint line, for example.

  15. Re:This misses the point by falsified · · Score: 2, Interesting

    My coworker left her ID at the hotel about a year ago and was treated with a 45-minute interview with a sheriff's deputy (but yes, they did let her through). Things may have changed between 2007 and 2009.

    --
    HI, MY NAME IS ISAAC.
  16. Re:Great...now just one more issue.... by Nocuous · · Score: 3, Interesting

    the last line of the summary says it all

    if it is true, and flying is already safer than road travel, then why do we need all the security?

    Your question goes to the heart of half the waste in human society - humans are REALLY BAD at risk assessment. We'd be better off scaling back airport security and putting a tenth of the saved resources into looking for plots, if at the same time we seriously enforced traffic safety laws (including speeding, reckless/aggressive driving, and seat belt use), and hey, while we're at it, stop feeding our kids so much high fructose corn syrup.
    Get into the habit of looking both ways before crossing a street (even one-way streets), wash your hands before eating, use a damn condom! Wear a helmet on your bike or motorcycle.
    All of these simple precautions will do more to save lives than subjecting people to more invasive searches at airports.
    But that won't happen, so just go back to pounding Jagermeister and thinking, "nah, I'm okay to drive".

    --
    Don't take it personally, but I'm not going to read your pithy response to my post.
  17. Re:Great...now just one more issue.... by JustinOpinion · · Score: 3, Interesting

    But the "per mile" argument is absolutely relevant when assessing the increased number of deaths caused by people opting to drive instead of fly. The danger of flying scales (roughly) with the number of takeoffs and landings that are performed. The danger of driving scales with the number of miles driven. When you look at the actual numbers, it turns out that flying is safer for any distance over which people practically take planes (even for flights of 30 minutes in the air, the number of miles covered is such that driving the same distance would be more dangerous).

    So the point is there is a subset of flights for which a person has to make a rational choice: should I go by plane (which is fast in the air but still takes quite awhile because I have to get there early, there is airport security, risk of delays, ground transportation to my final destination on the other end, etc.) or should I go by car (which might take a bit longer but is more fully under my control). As flying becomes more and more annoying, more people will decide to take their car (at least for a certain subset of trips), which will increase the number of deaths overall.

    This is a problem. It's also a problem that the radiation from a backscatter x-ray machine increases your odds of dying from cancer. And because terrorist deaths are so rare, it turns out that the scanners will probably increase the number of deaths overall, since they will create more cancer deaths than they can possibly solve by reducing terrorism deaths.

    So the scanners increase the death-rate in the US in at least two ways.

  18. Re:Great...now just one more issue.... by Rob+the+Bold · · Score: 4, Interesting

    the last line of the summary says it all

    may lead to more deaths as more people to use road transportation to avoid flying — much more dangerous by the mile than air travel.

    if it is true, and flying is already safer than road travel, then why do we need all the security?

    TFA didn't give any guesstimates of numbers, so I ran a few. If 5% of the 800 billion air miles in this country (as of Sept 09 to Aug 10) are replaced by highway miles, then that's something like 500 extra highway deaths. I'm using NHTSA and BTS statistics on fatality rates and air travel statistics.

    Naturally there are a lot of assumptions, like just how many air miles we might lose to people not willing to go through the enhanced intrusiveness and increased wait times. Certainly, not every lost air mile is made up with a highway mile. Many people would drive to a nearer vacation spot. Business that would have been conducted face-to-face might happen another way. Some people might just skip the trip altogether.

    Nevertheless, if the deaths are in the hundreds then that could easily exceed the lost of a single plane. These deaths would be spread out though throughout the year and across the country, so wouldn't make the news. So we'd feel safer even though statistically aren't.

    --
    I am not a crackpot.
  19. Forget that by CAIMLAS · · Score: 2, Interesting

    As someone else said, "who controls the TSA?" From the appearances of things, nobody. Either that, or the Executive branch has a lot to answer for.

    I don't care if this makes it 'less' objectionable. In my mind, it doesn't. It's largely the principle of the matter to which I protest, but the implications are thus:

    * The backscatter radiation is of highly questionable health implications. There are many places in the world where microwaves have not been adopted (for good reason): they change the molecular structure of fats and destroy vitamins. Aside from the direct radiation impact said 'scanners' have on our bodies, what are they doing to our fat and vitamin content?
    * Inconvenience
    * I'm paying how much for all of this?

    From now on, I'm driving or taking the train. It will mean several things to me and my family:

    * I'm investing (yes, investing) in a larger vehicle with a diesel engine. Something old but reliable (think: Chevy/Ford vans). My family will be able to drive in comfort at nominal per-mile cost.
    * When not driving, we will be taking the train. Somehow (where it is available) long-distance train fares remain relatively low (eg. $150/person for a Denver-San Francisco round trip) - though there are implications such as vehicle storage to contend with here, as well.
    * As a result of the time requirements (our families live on the coasts; we're in the Black Hills), we will not be traveling as often.

    Their security theater was somewhat tolerable before. It was just barely quicker to fly 500 miles than it was to drive (eg. Rapid City to Omaha), but cost a bit more. Now, it appears to take significantly longer, it's more inconvenient in a dozen different ways in addition to time, and cost is through the roof.

    I suspect that if we got the FAA and the TSA out of things, air transit would once again be cheap and reliable. But that will never happen.

    I think it's time to see this country instead of just flying over it.

    --
    ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
  20. Re:Great...now just one more issue.... by thePowerOfGrayskull · · Score: 5, Interesting

    My wife and I were talking about this yesterday. We would rather be one of the many thousands of people a screener sees "naked" instead of one of the people being publicly fondled.

    That's pretty much how they're counting on you thinking. Naturally a public groping is less appealing than a quasi-anonymous screening. However, your tacit agreement that this type of search is necessary in the first place puts you at a disadvantage to start with for it means you've dismissed option 3 out-of-hand.

    That also leads to suggestions like those in TFA -- not to eliminate the searches, but to make them "less invasive". Too many people seem to think that the major issue here is nudity. A subset of people claim to be concerned about the radiation, but I think many of them are doing this to avoid sounding too radical about the real issue: for me (and I think many others), the issue is "unreasonable search" -- and as long as we continue to consent to the searches, they're allowed to do them.

    Of course, you're free to fall in line and know your place. As for me, I'll speak with my wallet and contacting my representatives. I've already stopped flying unless the drive was more than 12 hours -- after all, 12 hours is close to break-even when you factor in flight time and security. (One one recent occasion I drove 500 miles and made it home before my flying colleagues.) I can and will stretch that to 24 hours, even though it inconveniences the hell out of me.

    I'm just glad that the media is picking up on this issue. I only hope their attention span lasts longer than it takes for some administrator to soothe them by saying the searches will be "less invasive" from now on.

  21. Re:Great...now just one more issue.... by jackbird · · Score: 2, Interesting

    Flight 587, when it went down in Rocakway Beach, Queens, New York City, destroyed exactly one single-family home and damaged another one. And that was a direct hit of nearly an entire Airbus A300 (minus the vertical stabilizer and an engine, I believe.)

  22. wrong by doug141 · · Score: 2, Interesting
    http://www.faa.gov/news/press_releases/news_story.cfm?contentKey=1966

    Press Release – FAA Announces Decision on Child Safety Seats

    ...The agency said its analyses showed that, if forced to purchase an extra airline ticket, families might choose to drive, a statistically more dangerous way to travel....

  23. Re:Great...now just one more issue.... by hazem · · Score: 2, Interesting

    It's been explained to me that the cosmic rays and high-energy x-rays mostly pass through the body and don't cause any damage. But these low-intensity x-ray machines in the airports are low enough energy that the radiation is mostly absorbed by the skin and the rest of the body. This difference apparently makes the dosage equivalent models invalid because they were designed with the idea that the radiation is high enough intensity so that it passes through the body.

  24. Re:Great...now just one more issue.... by IICV · · Score: 5, Interesting

    So? Who cares? If there ever was a use for Plato's noble lie, it's this. I'm spreading that shit around, because maybe it'll make people wake up a little bit.

    Also: your chances of dying in a hijacking are something like one in a million or less. What are your chances of getting skin cancer from this device? If they're greater than one in a million (which is entirely possible), then it is not worthwhile to use these devices.

    This is the same reason why the new breast cancer screening recommendations for women over age 50 say that they should get mammograms only once every two years, instead of once a year - the chances of detecting breast cancer are outweighed by the chances of causing breast cancer when you take a mammogram once a year.