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Smart Billboards

djdanlib writes "The New York Times ran this story Sunday about the Mobiltrak smart billboard system. It works by detecting what radio station you're listening to as you pass by a billboard, then displaying advertisements targeted at that station's demographic. It's kind of like a real-time Nielsen Ratings system for radio. And it's entirely passive, requiring no special hardware in your car - it receives the faint tuning signal generated by your radio." We've mentioned these before.

66 of 313 comments (clear)

  1. Oh boy... by wrinkledshirt · · Score: 5, Funny

    Is the Howard Stern show still on the radio these days? That could get dangerous.

    --

    --------
    Bleah! Heh heh heh... BLEAH BLEAH!!! Ha ha ha ha...

    1. Re:Oh boy... by TWX · · Score: 5, Insightful

      "Is the Howard Stern show still on the radio these days? That could get dangerous."

      How about the flip side? I listen to NPR a lot, and if enough people are listening to non-corporate radio, it'll be really interesting to see what kinds of ads are displayed.

      Of course in Phoenix, almost all of the corporate stations are running extremely frequent ads for adult stores like "The Castle Boutique" and "Fascinations", or ads for participating in medical studies, so the content could get rather lewd or strange if these advertisers take to the billboards...

      --
      Do not look into laser with remaining eye.
    2. Re:Oh boy... by gfxguy · · Score: 4, Insightful

      Are you claiming there's no advertising on NPR? I guess plugs for sponsors don't count for some. They do for me, however.

      --
      Stupid sexy Flanders.
    3. Re:Oh boy... by JUSTONEMORELATTE · · Score: 4, Insightful
      How about the flip side? I listen to NPR a lot, and if enough people are listening to non-corporate radio, it'll be really interesting to see what kinds of ads are displayed.

      Wow, I must be further left-of-center than I thought. NPR isn't corporate radio?
      To answer your original ponder about what kind of ads, how about ADM, Saab, Keane, etc. They're still ads, they're still for-profit corporations paying money for their ads to be placed on advertiser-supported broadcast radio.
      Pledge drives support the operations budget of the local re-broadcaster, not NPR.

      --
    4. Re:Oh boy... by TWX · · Score: 2, Funny

      We're not sitting there with ten minutes of bombardment from your local automobile dealerships advertising $10,000 for your trade, commercials for anti-depression medication, ads from your local nightclubs talking about the ladies that'll be there Thursday night, etc...

      --
      Do not look into laser with remaining eye.
    5. Re:Oh boy... by dillon_rinker · · Score: 5, Insightful

      Yum - federally funded radio! I can see the ads now:

      "Vote for this politician, who is just like the other one, except for his stance on the death penalty!"

      "Support our drive to change this wholly irrelevant government policy! Ignore the $=power equation, and the fact that you=$0!"

      "Vote! Cloak the government in the mantle of legitimacy!"

      "Vote twice! Cloak the government in the Mantle of Legitimacy +2!"

      Corporate sponsorship is fundamentally no different from federal sponsorship. Both sponsors want you to be a good sheep. Both hold up the threat of mutton to encourage you to permit your fleecing.

    6. Re:Oh boy... by Enzondio · · Score: 2, Insightful

      Pledge drives support NPR as well because local stations have to pay to get NPR programming, thus they support NPR with funds obtained (in most cases anyway) primarily from pledge drives.

      It's indirect, but it's still support.

    7. Re:Oh boy... by IM6100 · · Score: 2, Informative

      Garrison Keillor used to have a whole routine set up around the fact that he could mention who sponsored his programming, but that he wasn't supposed todisclose what they produced or turn it into a commercial. He used to joke around for a minute on Prairie Home Companion about 'This Program brought to you by Cargill' and then guess (wrongly with humour) about what products Cargill might possibly produce.

      Now, Keillor and his ilk just rattle out a whole ditty for each corporate sponsor, written by that sponsor, often a regular commercial for whatever of their current products they want shilled.

      --
      A Good Intro to NetBS
    8. Re:Oh boy... by GreyPoopon · · Score: 3, Funny
      Has it been that long since you viewed non-taxpayer supported television/radio?

      I recently viewed non-taxpayer supported radio, but I got bored after it just sat there doing nothing for a while.

      --

      GreyPoopon
      --
      Why is it I can write insightful comments but can't come up with a clever signature?

    9. Re:Oh boy... by 2short · · Score: 3, Informative

      As I refered to obliquely, about 50% of my listening is to my local NPR member. Here in Colorado, there's a similar split: an all classical music station, and a "News and Information" station that's really the "everything else" station. I'd be really happy if they set it up so I could give my donation to just the "News and Information" part. I've got nothing against Classical music; I just don't listen to it. Of course, then I'd be wishing they'd ditch the jazz and really do pure "News and Information".

      Anyhow, by asking if anyone listened to taxpayer supported radio, I was actually trying to make a probably way too subtle point...

      My local public radio station gets some high 90s percent of it's budget from listener contributions, which I beleive is typical. Most of their content comes from NPR or PRI, which in turn get almost all their funding from dues paid by the aforementioned local stations. Both at the local and national level, the public radio organizations get very small amounts of funding for specific purposes from competive government grants. Anyone can compete for these grants; there is no specific public radio funding in the US or Colorado budget.
      So I don't think it's reasonable to call NPR "taxpayer supported radio". (You'd have a much better case for referring to Boeing as "taxpayer supported aviation", which I doubt the original poster is in the habit of doing.)
      Thus, for (admittedly minor) humerous effect, I chose to pretend he was talking about the only actual "taxpayer supported radio" I know of: The US propaganda network Voice of America, which cheifly brodcasts overseas.

      So now I've taken my original quick smart-ass post and competely beaten it into the ground. (Does that make this a long, dumb-ass post?)

  2. Would love to see this on a freeway by Space+cowboy · · Score: 3, Insightful

    Talk about blipverts...

    Simon

    --
    Physicists get Hadrons!
  3. Hacks? by AbbyNormal · · Score: 5, Funny

    Finally a way to get back at all of those stupid SUV driver!

    Stuck in bumper to bumper traffic...SUV cuts you off.

    Broadcast message to billboard: "Man in Silver SUV with license plate 12345 has no pants on, is currently drinking, and likes to beat small puppies".

    --
    Sig it.
    1. Re:Hacks? by micromoog · · Score: 2, Insightful
      You pretty much summed it up . . . the US is all about doing whatever I want, regardless of how it affects other people, 'cause it's my RIGHT, goddammit, my RIGHT!

      Other examples of this mode of thinking in action:

      • telemarketing/spam
      • frivolous lawsuits
      • owning slaves

      There's more to morality than the law. There's more to life than fulfilling your own small selfish desires. But it's your right to think otherwise.

  4. Schism. by Anonymous Coward · · Score: 2, Insightful

    Smart Billboards, Dumb Advertising.

    1. Re:Schism. by gfxguy · · Score: 5, Funny

      Dumb Advertising...

      1. Advertising is dumb.
      2. Advertising works.
      3. Marketers use adverstisements that appeal to the most people.

      Conclusion: most people are dumb.

      --
      Stupid sexy Flanders.
  5. Re:Welcome to 10 years ago ... by phil+reed · · Score: 5, Insightful
    Auto mp3 players are under $150, who actually listens to the radio anymore?

    uh, people who want traffic reports? People who want to listen to the news or weather?

    --

    ...phil
    "For a list of the ways which technology has failed to improve our quality of life, press 3."
  6. The google link by Albanach · · Score: 4, Informative
  7. If my radio.. by kautilya · · Score: 5, Interesting

    Umm..if my radio isn't on will I get a message.."Switch on your radio stupid moron! I am not getting any signal. I gotta play some ad for you"

  8. High traffic areas... by BubbaTheBarbarian · · Score: 4, Insightful

    Just a general Q and O...
    How well would these wok in high traffic areas? I could see something like this in Kansas or some other place where you have time to hit the reciver, change the ad and such, but in a high traffic area?...would it try to pick up if you driving a Ford POS or a Beemer and then chose the ad based on that?

    What if I am listening to Art Bell? Would it show me an ad for the latest book on Shadow Gov? Jim Rome? How to have a take a not suck? Kim Kommando? Your a loser and need to return your computer right now? Top 40? All you $$$ belong to us - The RIAA? (off topic rant I know)

    Seriously, seeing an ever changing sign in a high speed/high traffic zone is an pile-up just begging to happen. I would hope they keep these kind of things in areas where concentration can be peoperly applied to them without the detriment to overall driving situation.

    (This post too sucky to spehl cheq...)

    1. Re:High traffic areas... by Philosinfinity · · Score: 2, Informative
      Have some vision. Let's go about this paragraph by paragraph.
      How well would these wok in high traffic areas? I could see something like this in Kansas or some other place where you have time to hit the reciver, change the ad and such, but in a high traffic area?...would it try to pick up if you driving a Ford POS or a Beemer and then chose the ad based on that?
      Nope, the billboard cannot pick up what type of car you have... at least not until cars emit some sort of RF ID. So here's how it works. I have this billboard that polls all the local traffic that it can poll. After having a demographic created, I can simply tune my add for the one most suited to that demographic. Then, as traffic changes quickly, each billboad is up for a set time (say a minute or 30 sec). Once this time limit has been reached, the billboard polls again. What if I am listening to Art Bell? Would it show me an ad for the latest book on Shadow Gov? Jim Rome? How to have a take a not suck? Kim Kommando? Your a loser and need to return your computer right now? Top 40? All you $$$ belong to us - The RIAA? (off topic rant I know)
      I'm hoping that is nothing more than a joke. Ever notice that during sports games there are a lot of beer and food ads? That's the kind of marketting changes they mean. People who watch certain shows are more likely to buy certain products. Same with radio.
  9. Hmmm.... by telekon · · Score: 5, Interesting

    I was thinking before I posted, "What happens when there's bumper-to-bumper traffic; how do you target every car when they move that slowly?"

    But then I got to thinking: could you drop a radio next to the billboard and amp the faint tuning signal, so, say, all the people listening to top 40 see ads targeted toward NPR listeners?

    I guess this is theoretically possible. Funny how every new advertising technology begs the question, "How can I subvert this?"

    --

    To understand recursion, you must first understand recursion.

    1. Re:Hmmm.... by plexxer · · Score: 5, Funny

      I was thinking before I posted, "What happens when there's bumper-to-bumper traffic; how do you target every car when they move that slowly?"

      Simple! If it detects traffic moving that slowly, it puts up an ad for the local metrorail system :)

      --
      The government's moral compass is controlled by GPS.
      In times of crises, they alter it to suit their needs.
  10. Station Surfing by MisanthropicProggram · · Score: 2, Interesting

    The way I station surf - NPR, Rock, Top 40, oldies,.... all in a span of seconds - the billboard would be flickering like disco ball!

    --

    There is no spoon or sig.

    1. Re:Station Surfing by zeroprime · · Score: 2, Funny

      I feel sorry for their passengers

      --
      Hey! come on! try dividing it by anything!
  11. Broadcaster/Advertizer hacks for this by G4from128k · · Score: 5, Interesting

    It would seem that a particular radio station or advertizer could hack the system and bias the billboard by leaving a box of cheap battery powered FM radios by the side of the road (or a weak FM transmitter). With all those radios tuned to the same station it would fool the billboard into thinking that the cars where tuned to that station. Thus the billboard would leave the same ad up and log high ratings for the station.

    --
    Two wrongs don't make a right, but three lefts do.
  12. Easily corrupted by dheltzel · · Score: 2, Interesting

    What if an enterprising radio station put a powerful radio tuned to their station next to the billboard's receiever?
    Then it would overpower the car radios and make it appear that all the cars are tuned to that station. This would seem like a good thing for that station's marketing department.

  13. I've seen these signs by pantycrickets · · Score: 5, Interesting

    I lived right by the one they had in Roseville, CA. It was extremely bright, annoying, and dangerous seeming. While you are driving down the freeway (especially at night) it was so bright that you couldn't not look at it. Which I'm sure is the point. But when you have thousands of people flying by at 70mph, it just doesn't seem safe.

  14. And who pays for this? Seems different. by ianscot · · Score: 3, Interesting
    Out of passing (pun intended) curiosity, will this work for anything but the wholly-owned model like the Ford sales lot in the NYT article? I can see that idea -- country listeners want the F150s, the "alternative" station maybe gets the Ford Focus picture. But many companies don't have products for every demographic. Do they just not want to consider this option, then?

    Most billboard business is based on renting the space. If you have to rely on a radio station's demographic to get your ad up there, how would you pro-rate that rental fee? Does the radio station get anything out of it, if you try it that way? And so on. Seems like a substantially different business model could build around this idea -- something "hits"-like.

    (And more importantly, what does this mean for public service announcements? If I'm driving down the road and all the billboards are tailoring themselves to messages about the D.A.R.E. program, am I listening to Rush Limbaugh, or what? How about if all the pictures turn to messages about abortion?)

    --
    "Fundamentalism" isn't about divine morality. It's about human authority.
  15. Re:Welcome to 10 years ago ... by worst_name_ever · · Score: 5, Funny
    People who want to listen to the news or weather?

    Oh man, you are so behind the times. I ripped all my news and weather reports to mp3's a long time ago. Now I can listen to peace treaties or car bombings, sunny weather or rain, depending on my mood on any given day! It's great!

    --

    In Soviet Rush, today's Tom Sawyer gets high on you.
  16. People seem to be misunderstanding by jerw134 · · Score: 5, Informative

    This sign doesn't react to what it detects. It simply logs what stations people are listening to, so that the advertiser on the board can look at that info and decide who to target during different parts of the day. It works exactly like Nielsen ratings. The info gets collected and people look at it to make decisions, it's not reacted to immediately.

  17. Some questions by Psychic+Burrito · · Score: 2, Interesting
    Can somebody explain in layman term how this works exactly?
    • Why does every radio emit a signal? Is it inefficiency? Is it really every radio or only old ones?
    • Is this signal broadcasted back through your antenna or is this just a faint signal inside your radio and they have really good receivers in their billboards?
    • Has anybody tried to create a radio that doesn't emit this signal?
    • Is this only something with FM radio, or also with AM?
    Thanks for some clarifications.
    1. Re:Some questions by cryptor3 · · Score: 5, Informative
      Why does every radio emit a signal? Is it inefficiency? Is it really every radio or only old ones?

      Your radio has a component in it (an oscillator) that vibrates at the frequency of the station you're listening to. This is "tuning" into the station. This vibration is what emits the signal.

      Is this signal broadcasted back through your antenna or is this just a faint signal inside your radio and they have really good receivers in their billboards? Definitely a result of good receivers in the billboard. Though I think the antenna helps.

      Has anybody tried to create a radio that doesn't emit this signal?

      Not that I know of. I don't think it's really been a major issue worth pursuing in the consumer market. The best way to do it would probably be to shield the box. But since you've got to have an antenna linking the oscillator with the emag signal, you can never completely isolate it.

      Is this only something with FM radio, or also with AM?

      Both AM and FM. You've got to have an oscillator to tune into either one.

    2. Re:Some questions by mellon · · Score: 4, Informative
      Most FM radios use superheterodyne receivers (actually, I'm not sure how true this is anymore, what with software-defined radios, but it certainly has been historically true). There's a pretty good quick explanation of how this works at this site. Look at the text around the first diagram.

      The key is that the frequency of the local oscillator varies, so if you can detect the output of the local oscillator, you can tell to what frequency the radio is tuned. I'm oversimplifying greatly, and the article I've referred to is a pretty rough overview - if you really want to know how this stuff works, you need to do some serious studying. :'}

    3. Re:Some questions by asquared256 · · Score: 2, Informative

      A radio has a local oscillator, operating at 10.7 MHz above or below the tuned frequency for FM and 455 kHz (?) above below the tuned frequency for AM. When you mix two frequencies, the two original frequencies, and their sum and difference result. The radio mixes the local oscillator signal with the incoming signal to get 10.7 MHz for FM and 455 kHz for AM. The rest of the circuits in the radio are tuned to that frequency. Actually older radios didn't do this, they just had variable tuning circuits in every stage, necessitating multi-gang variable capacitors and such. I think this system operates by sensing the (frequency - {10.7 MHz,455kHz} ) signals emitted by nearby radios.

  18. My iPod + iRock = devalued radio (wasted ads) by aphor · · Score: 2, Insightful

    I primarily listen to my iPod using an iRock FM transmitter. Its signal strength is low enough that I fear Billboards may overpower it.

    If I *ever* catch a commercial interrupting the sanctum of my iPod to my car stereo, I will clip the antenna lead and install a loop around the sticky pad where my iPod sits. If that doesn't work, I'll cut radio completely out. I'll get a preamp and amp with a direct connection.

    Who needs radio? I won't go back to radio until there is some kind of cellular packet radio with multicast distribution. Then I could listen to my favorite stations cross country. Even with a 5GB iPod, smart playlists allow you to randomly rotate 2.5 days of continuous uninterrupted no-repeat music from your own collection. Even a 64MB flash based MP3 player will give you 45 minutes to an hour. 256MB is easily one leg of a car trip or a two-way commute.

    In my family, smart billboards would be called "a day late and a dollar short." All it's really worth is a line in the sand drawn by the Ad companies. Flip them the bird!

    --
    --- Nothing clever here: move along now...
    1. Re:My iPod + iRock = devalued radio (wasted ads) by KirkH · · Score: 2, Informative

      I don't think that's how it works. The billboard displays an ad, it doesn't hijack your radio station.

    2. Re:My iPod + iRock = devalued radio (wasted ads) by kalel666 · · Score: 4, Funny

      What's going to happen is the billboard will sense your iPod playing mp3's and assume you've "stolen" them. A message will then appear telling you to pull over and await your RIAA overlords and cavity search.

      --
      I HAVE CUBIC WISDOM THAT TRANSCENDS AND CONTRADICTS ONE DAY GODS
  19. Re:Welcome to 10 years ago ... by smoondog · · Score: 2, Interesting

    I listen to the radio. NPR. I commute and get my news on the way to work each morning.

    -Sean

  20. Spoofing the billboard by goombah99 · · Score: 5, Interesting
    I think these things work by detecing the radiated IF leakage from your radio (an old spy trick). But it also means you could spoof one of these. Just put a leaky battery powered radio right near the billboard.

    this way I could get the bill board to restrict its selection to topics. If my Ad was in that rotation then I probably just improved its visibility five or ten fold. I could sell that to people who place ads.

    --
    Some drink at the fountain of knowledge. Others just gargle.
    1. Re:Spoofing the billboard by tetranz · · Score: 2, Interesting

      Wouldn't it be getting the local oscillator? That would need to assume a standard I.F. Its many years since I've played much with the internals of radios but are standard I.F's still 455 KHz for AM and 10.7 MHz for FM.

      You're right, it would be easy to screw up.

    2. Re:Spoofing the billboard by KC7GR · · Score: 2, Interesting

      That's the only way they could work. I can tell you from direct experience, though, that any billboards that have this are going to have to have a pretty sensitive receiver and a good antenna system, thanks to how weak that local oscillator signal is. That's going to drive up the cost significantly.

      Another consideration: Do all modern broadcast receivers use the exact same first IF frequency? I can say with confidence that very few 2-way radios do. I've seen a number of cases where even different model series of radios from the same manufacturer will have different IF's. Motorola is a great example of this. I've seen them use 10.700, 14.400, 21.400, 11.245, and 45.000, all depending on what series of radio it was.

      Anyway, getting back to spoofing: It might be amusing to, if one has mobile HF capability, adjust one's HF radio to a frequency other than what the broadcast radio might be putting out and key-down for a few seconds (in AM mode, so you'll put out a real carrier -- SSB would do nothing unless you actually spoke). See if you can fool the silly thing.

      --

      Bruce Lane, KC7GR,

      Blue Feather Technologies

    3. Re:Spoofing the billboard by IM6100 · · Score: 2, Funny

      Ah! I'll just install my antique Atwater Kent tuned-stages radio in my car, which is non-superhetrodyne!

      --
      A Good Intro to NetBS
    4. Re:Spoofing the billboard by IM6100 · · Score: 2, Insightful

      No it's not. It's operating a regular radio, probably even one that's FCC approved. All radios 'leak' out this form of RF when in use.

      It might be classified as littering if you go dumping radios all around, but nothing the FCC could get you for.

      --
      A Good Intro to NetBS
    5. Re:Spoofing the billboard by ncc74656 · · Score: 2, Insightful
      No it's not. It's operating a regular radio, probably even one that's FCC approved. All radios 'leak' out this form of RF when in use.

      Only superheterodyne tuners do this. Regenerative tuners will do this only if they're improperly adjusted. TRF tuners will never do this. I guess that means it's time to break out the old Atwater Kent...

      --
      20 January 2017: the End of an Error.
  21. "We've mentioned these before." by hype7 · · Score: 4, Funny
    We've mentioned these before.


    Hmm, what's this then? Some kind of new editorial disclaimer to enable double posts? :)

    -- james
  22. National conglomorate? by garcia · · Score: 3, Funny

    Does it display a table of executives slaughtering a baby when you drive buy listening to a ClearChannel or Infinity station? ;)

    1. Re:National conglomorate? by sparkes · · Score: 2, Informative

      In the UK Clearchannel own most of the billboards not the radio stations.

      If they start taking over radio stations wholesale they have a whole lot of advertisising space to push their wares.

      and now they can selectivly push them on roads where their pentitration is low ;-)

      sparkes

  23. WTF?... by Hayzeus · · Score: 3, Funny

    Back up a little. So these Machines mentioned Before -- they're like Carriages, only without Horses? From whence do they derive their Motive Force -- some kind of Magnetikal Effect? -- Poor Dick

  24. Re:not good in rush hour by Gildor · · Score: 2, Informative

    According to the article, the billboard analyzes patterns to find out what ads to display at what time of day; it doesn't change for every car that comes down the road:

    "Using the information collected by the Mobiltrak device, Future Ford knows that on weekdays that stretch of I-80 carries a lot of drivers who listen to country-and-western stations, so that's when the dealership advertises the Ford F-150, a popular pickup truck. Evening drivers, Mobiltrak has found, are more apt to listen to talk radio and adult contemporary, so they see ads for Tauruses and Escorts"

  25. Re:Welcome to 10 years ago ... by NSash · · Score: 3, Informative

    The parent is completely out of touch with mainstream society. "Who actually listens to the radio anymore?!" I guess the record labels can stop paying Top 40 stations to play their crap, seeing as how no one listens to them. I guess all those rap stations my friends listen to can fold, since their only remaining membership is luddites.

    Yes, MP3 players are getting cheaper, but an iPod is sill $200, and every car built in the last 30 years has an AM/FM radio. Aside from just the weather, the news, and talk shows -- streaming, time sensitive content -- the radio offers the opportunity to hear new music.

    You might disagree about the benifits of radio, but the fact is that most people don't own an MP3 player, and most of those who do still listen to the radio. "Who still listens to the radio?" On the freeway, the vast majority of people.

  26. I'm telling ya... by SmurfButcher+Bob · · Score: 5, Funny

    ... driving is soon going to be much more hazardous with the advent of new, "Pop-up Billboards".

    --

    help me i've cloned myself and can't remember which one I am

  27. Let me get this straight by HangingChad · · Score: 4, Funny
    I have to have a foil wallet to keep my EZ-Pass and credit cards from finking on me, an RFID jammer for my clothing tags, turn my cell phone off to keep from being tracked with the 911 locator, the FBI can use my OnStar to listen to conversations in the car and now I have to have a billboard jammer to keep everyone on the planet from knowing what radio station I listen to?

    Being paranoid is getting to be more work all the time.

    --
    That's our life, the big wheel of shit. - The Fat Man, Blue Tango Salvage
  28. Re:Changing stations quickly, by zeroprime · · Score: 2, Interesting

    I think that if enough people are driving by, it'll happen on its own.

    --
    Hey! come on! try dividing it by anything!
  29. Re:not good in rush hour by CriX · · Score: 3, Insightful

    Dude, give the engineers a bit more credit. They're not morons. The prospect of a schizophrenic, strobing billboard I'm sure has been considered.

    Just as elevators in tall buildings don't get all flabbergasted and shoot out of the roof, these bill boards should be pretty well behaved too.

    --
    Moderation: +1 pwnage
  30. Feh! by Asprin · · Score: 2, Interesting
    --
    "Lawyers are for sucks."
    - Doug McKenzie
  31. finally -- technology comes through by dandelion_wine · · Score: 2, Funny

    I been waiting for a sign that'll fix me up with a tuba-playin girl.

    Hello, this is Harris. I'm in right now, so you can talk to me personally. Please start talking at the sound of the beep

  32. OT: low tech spam on Mexican beach by peter303 · · Score: 4, Interesting

    Advertising everywhere, all the time, reminded me of my experience at a Mexican beach last week. While a sitting on the beach admiring the natural and human scenery, hundreds of [ licensed ] vendors walk by every few seconds pushing everything from blankets, artwork, tatoos, food, sexual partners, etc. 99.9% of the interactions are "not interested", but they keep on coming all day. Its much like the MS TV commercial why the Blubberfly boots the salesmen.

  33. Dumb idea by dar · · Score: 2, Informative

    This is the kind of idea that sounds cool on the surface, but can't really work out irl.

    How many billboards have you driven past lately where you were the only one around in a car?

    Even if it does some kind of averaging. What, you're going to average Howard Stern and NPR? Is the result going to be better than the vanilla demographic they have for that area anyway?

    --
    My other Slashdot ID is much lower.
  34. Threshold breaking drivers by MisterMook · · Score: 2, Funny

    I wonder what would happen if you designed your "leaky radio" signal on purpose to appear from multiple car radios. Maybe a career of driving in rush hour traffic for some unlucky bastard? Guys driving around town with special getups designed to break the threshold levels of the billboards and turn the adverts to their employer's ads? Ick. It sounds about as fun as artifically inseminating sheep for a living.

  35. Not quite right by wowbagger · · Score: 5, Informative

    You are almost right, but not quite.

    The way a modern superheterodyne radio works is like this:

    You want to listen to a radio frequency at F1.
    The radio creates a local oscillator (or LO) frequency of F2, such that abs(F2-F1) = F3, where F3 is a fixed, intermediate frequency (or IF). A common IF for FM radios is 10.7 MHz, and a common IF for AM radios is 455 kHz. By pulling the signal to a fixed frequency the rest of the radio's design can be better optimized and simpler.

    Now, F2 can be either F1+F3 or F1-F3, it make little difference. So one way to confuse the system would be to retune the radio so that it uses "the other IF" - i.e. if the radio is using F2=F3+F1, retune the guts so that it uses F2=F1-F3.

    Alternatively, replace the IF strip to change F2, and then retune the radio appropriately - if the sign's systems assume an IF of 10.7 MHz, and you are using an IF of 9.7 MHz, that will confuse the sign. The difficulty there is getting components designed for a non-standard frequency. If the radio is using the old "tuned slug" design this isn't so bad, but if the radio is using a crystal filter you are looking at custom crystals.

    However, there is no need for the LO to be coupled to the world - the first stages of the radio can amplify the RF and decouple the first LO mixer from the world. It just takes a bit more work on the sheilding of the radio - you use a milled block of aluminum rather than foil sheilds. I know, since that is what I do for a living - design radios (well, radio test gear, which is a special case of the class Radio)

    However, building a jamming oscillator at the needed frequencies to scramble this sign, while completely illegal, is also trivial - buy a cheap FM transmitter kit and retune it slightly. Of course, by causing interference you are in violation of FCC part 15 rules, and will get nailed if you get caught, so don't, 'mkay?

    If it bothers you, just don't listen to the radio.

  36. And I have the right by panxerox · · Score: 2, Interesting

    to put a 5 dollar solar powered transmitter 20 feet from the billboard dialed to the classical station.

    --
    "It's so convenient to have a system where everyone is a criminal" - A. Hitler
  37. Neuros FM transmitter by Greg+W. · · Score: 4, Interesting

    So, what will the billboard think when it not only gets the news that I'm listening to a radio station that doesn't really exist (91.9MHz), but also gets blasted by the 91.9MHz FM signal my car's emitting? Will they use Tuneprint to figure out what song is playing? Will they simply categorize me as "geek" and display ads for computer stuff?

    Nah, they'll probably be too stupid for that. They'll probably think "Wow, this guy's listening to bumfuck cornfield radio!" or whatever the 91.9MHz station is that sometimes leaks through and interferes with my music. I'll probably get ads for Bibles or manure.

    Exception: I listen to a college radio station show on Thursday afternoons: Guerrilla Radio, on WRUW 91.1 FM, 1630-1730 Thursdays. Unless I forget.

  38. What would be interesting... by ()vnorby() · · Score: 2, Interesting

    What would be interesting are billboards that send out ads. For example, you are driving by a heineken ad, and it says on it "tune your radio to 89.7" or something like that and you could listen to the ad that went along with the billboard. Might be useful if you wanted more information about an the subject of the billboard. Kind of like a drive-by movie theater where when you are in the right range, you can hear the movie audio.

    --
    -Vib, videogame freelancer for news0r.com, videogame.net, and vnorby.tk
  39. and content by the corporations by SgtChaireBourne · · Score: 2, Informative
    The corporations are steering more of the content as well. Someone in Redmond must have gotten irked by the thought of not having control over the radio content.

    Seriously, what if the majority of riders are listening to truly non-commercial stations like student stations e.g. ones with voice id's like "WCBN 88.3 FM - at the far left of your radio dial" or "Radio Free Ann Arbor". Would the billboard show an ad for a state or city park or a free concert? Or just tell people to bike to work?

    --
    Beta is broken and the link to classic doesn't work. Stop wasting our time or there won't be anybody left here.
  40. Re:XM? by Phreakiture · · Score: 2, Interesting

    No, it will probably not react to XM or Sirius radios, unless you are using a modulator with it (to listen over an FM station preset in your car) in which case it will read garbage.

    That last statement probably needs more elucidation. If you have your sirius/XM radio being rebroadcast on, say, 99.3, then the billboard will detect your LO at 99.3+10.2=109.5 and correctly conclude that you are listening to a radio tuned to 99.3, and it may also detect the modulator's carrier at 99.3, and conclude that you are listening to 99.3-10.2=89.1. If there are stations on neither of these frequencies, it won't be able to make any sense of it.

    As a practical matter, you shouldn't set your modulator to the frequency of an existing local station, as you will probably not get very good audio.

    On the other hand, XM and Sirius have the potential to sell info, since the radio is entirely under their control. That is not to say that current models transmit this info, but since ALL models are manufactured under supervision/license, future models may have the capacity to store/retrieve/forward that info.

    Then we would have a Sirius problem :-)

    --
    www.wavefront-av.com
  41. Shades of Minority Report? by gizmonic · · Score: 2, Insightful

    That was the first thing I thought of when I saw this article.

    Personally, I found the advertising techniques in that movie to be a hell of a lot scarier than the whole Future Crime stuff. Probably because the advertising could happen. As I watched the movie I was picturing advertising execs having wet dreams, and board meetings saying, "We need this!"

    And now, here is the beginnings of it.

    --
    WWJD?
    JWRTFM!