五角大樓已發展出ㄧ種能從數百米外以心跳為本辨别主體的激光-心跳與面徵和指紋不同是完全獨特的
Pentagon has developed a laser that can identify subjects from hundreds of meters away based on their HEARTBEAT
27 Jun 2019
U.S. special forces are taking a more 'intimate' approach to remotely identifying targets, using lasers to sense their heartbeat.
The Pentagon can identify targets from afar using a laser to measure heartbeats
Technology is being developed for U.S. Special Operations for surveillance
Infrared lasers are able to penetrate clothing and skin to monitor blood flow
Heartbeats are completely unique unlike faces or even thumbprints
Prototypes currently have a range of about 200 meters or 219 yards
According to MIT Technology Review, the Pentagon has developed a prototype of the technology, code-named 'Jetson,' that uses infrared lasers to read a person's cardiac signature.
Though far less obvious than fingerprints or faces, people's heartbeats have a distinct profile, making them among the most useful biometrics for uniquely identifying a person.
HOW CAN YOU BE IDENTIFIED BY YOUR HEARTBEAT?
Like fingerprints, faces, and even the way you walk, heartbeats have a unique signature.
Using senors, those cardiac profiles can be leveraged in biometric security, and now: surveillance.
By using infrared lasers, the Pentagon has developed a laser that can read someone's heartbeat from 200 meters.
The technology could help identify insurgents in an active war zone and is more accurate than facial recognition.
To make the method viable, U.S. Special Forces would likely need to build a database.
What separates the signature from others like it, however, is the fact that unlike a face, which may bear many similar features to another, heartbeats are entirely distinct.
As noted by MIT, companies like Nymi are already using cardiac signatures -- taken via a wrist-mounted pulse sensor -- to identify people for security purposes.
Another advantage that has made the type of detection particularly desirable for the U.S. military is the use of lasers, which allows for a relatively long-range.
Current prototypes work from about 200 meters (219 yards) and with further modifications that range could be extended.
'I don’t want to say you could do it from space,' Steward Remaly, of the Pentagon’s Combatting Terrorism Technical Support Office told MIT. 'But longer ranges should be possible.'
Heartbeat patterns which are gleaned by detecting the changes in infrared light cause by a person's blood flow, are not only highly accurate -- about 95 to 98 percent -- but also versatile.
Unlike facial recognition, which may require a clear view of someone's face or be obfuscated by facial hair or other conditions, laser-detected heartbeats can be captured through normal clothing and at a number of angles.
The method does require an invisible laser to be pointed at a subject for about 30 seconds to get a sufficient read, meaning the technology can only be viably used on someone who is standing still.
As far as applications go, the military suggested that the technology could be used to identify insurgents by matching their heartbeats from a drone.
Like any biometric database, however, the biggest obstacle to making such a use reality would be generating a database large enough to cross-reference.
The technology may also find its way into more civilian uses like hospitals where doctors would be able to monitor a patients blood flow without ever having to hook someone up to a machine.
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