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The Military Government Privacy United States Technology

The Pentagon Has a Laser That Can Identify People From a Distance By Their Heartbeat (technologyreview.com) 63

An anonymous reader quotes a report from MIT Technology Review: A new device, developed for the Pentagon after U.S. Special Forces requested it, can identify people without seeing their face: instead it detects their unique cardiac signature with an infrared laser. While it works at 200 meters (219 yards), longer distances could be possible with a better laser. "I don't want to say you could do it from space," says Steward Remaly, of the Pentagon's Combatting Terrorism Technical Support Office, "but longer ranges should be possible." Contact infrared sensors are often used to automatically record a patient's pulse. They work by detecting the changes in reflection of infrared light caused by blood flow. By contrast, the new device, called Jetson, uses a technique known as laser vibrometry to detect the surface movement caused by the heartbeat. This works though typical clothing like a shirt and a jacket (though not thicker clothing such as a winter coat).
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The Pentagon Has a Laser That Can Identify People From a Distance By Their Heartbeat

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  • I'd settle for a wrist watch that can accurately record my heart rate without leaving a 0.5 inch deep mark on my wrist.

    • The military is probably willing to pay 100,000-1,000,000 a laser. If you wanted to spend that much on a wrist watch, I guarantee you could get a heart rate without leaving a mark.

      • by Megol ( 3135005 )

        As a wrist watch?

        • Yeah. If you want to write me a contract for 100 watches at 1 million a piece, I will get you a heart rate monitor that works without digging into your skin. I'll quit my current job and start tooling up ASAP.

          It's hard to make it work when you need to mass produce it, but it should be trivial if you don't need to keep costs down.

    • I will venture to say this wouldn't work at all while exercising. Pretty sure the person would need to be more or less stationary, at least at the frequencies of chest movement resulting from a heartbeat.
  • Put too much power into that laser, and all those people will have the same heartbeat... zero.

    • Put too much power into that laser, and all those people will have the same heartbeat... zero.

      Select laser power level -> _
      1 ) Target identification and range
      2 ) Illuminate target for airstrike
      3 ) Dazzle and disorient target
      4 ) EXTERMINATE!

      • 1 ) Target identification and range
        2 ) Illuminate target for airstrike
        3 ) Dazzle and disorient target
        4 ) EXTERMINATE!

        5) Let pass
        A good autonomous system would do number 1, then automatically choose from 2-5.

  • Do you want Insight Helicarriers? Because this is how you get Insight Helicarriers!! I'll give Chris Evans a call. We're gonna need him to suit up again...
  • This works though typical clothing like a shirt and a jacket (though not thicker clothing such as a winter coat).

    Sounds like this will discriminate against fugitives from justice in warmer climates.

  • I recall this tech was used in the novel Rainbow Six, and the game too I believe. 'Heartbeat detectors' they were called, worked through walls, and were used in order to tell if enemies were hiding behind doors, in corners etc.

    • The tech in Rainbow Six, which I believe also exists, detects the presence of heartbeats without visual line of sight and covers an area (possibly by scanning ala radar). This identifies which specific person it's intentionally pointed at.

      • Tom Clancy has been known to take technology known to exist to the public and extrapolate out how it might be developed and utilized by the military, sometimes with enough accuracy to get the attention of people in the know. He's been visited at least once by people arriving in a black GMC Suburban with no license plates to question him on where he found out about the stuff he put in his books. If Clancy used some technology in his books then it's likely to exist now or very soon. He's that good.

        • by gtall ( 79522 )

          Actually, he's not that good anymore, he's dead.

  • A new device, developed for the Pentagon after U.S. Special Forces requested it, can identify people without seeing their face: instead it detects their unique cardiac signature with complete bull shit.

    While it works at 200 meters (219 yards), longer distances could be possible with a better bull shit. "I don't want to say you could do it from space," says Steward Remaly, of the Pentagon's Combatting Terrorism Technical Support Office, "but longer ranges should be possible." Contact bull shit sensors are of

    • by AmiMoJo ( 196126 )

      There was some research published back in 2010 on using heart beats for identification, with a 23% failure rate. It's since been commercialized and naturally the company selling it claims better accuracy, but I couldn't see any independent tests. They use contact sensors.

      In any case this is fairly useless for most purposes, since if it works anyone can clone your heat beat from hundreds of metres away. Even in military applications it's hard to think of uses for it. Maybe drone targeting.

    • Any laser rangefinder with a sufficiently sensitive receiver can be used as a microphone by detecting the minute changes in distance caused by vibrations. Using that to "listen" to a heartbeat is not a huge leap. If heartbeats represent a unique signature, you have a method for remote identification.
  • "Is that a laser guided weapon you're pointing at me?"
    "Uh no....we're giving you a physical...(lowers laser 2 feet)...turn your head and cough."
  • They are just trying to create an image that they do not kill other random dudes when they drone "ISIS".
  • Makes sense, neat application.
  • Sharks with frickin lasers on their frickin heads were spotted at the beach tracking tourists.

  • Why is it all insurgents and killing? The article suggested it could be used for medical purposes. Why not the first use? Imagine having the system in high traffic public places, and allowing for identification, notification that something's up with your heart? Lives saved, right there. Who's not thinking up these systems to help? Come on boffins!
  • Well, we thought that their heartbeat was alike a terrorist.
  • Sound does travel in a vacuum, and it travels at the speed of light.

    You know you're a weenie and not a true geek when you complain about explosions of enemy spacecraft playing on the victorious spacecraft's playing on the bridge's main viewscreen with an audio sound track, because sound doesn't travel in a vacuum.

    Oh yes it does—if your engineers have half a wit, and the astrobucks contractor studded sensory lasers into your unobtanium hull plates.

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