Face recognition and fingerprint recognition are weak? Pentagon develops long-distance heartbeat recognition

At present, in the field of security , Like face recognition 、 Fingerprint identification has been widely used , And for areas with higher security requirements , Iris recognition is applied more . however , Now the Pentagon has developed a new biometric technology —— Long distance heartbeat recognition .

In fact, heartbeat recognition technology has appeared a few years ago , Some researchers have developed a set of equipment —— Using low power Doppler radar （ Translation notes ： A radar that uses Doppler effect to measure the radial velocity of an object in the direction of radar beam ） To decode the unique geometry of the user's heart , And how the heart contracts and relaxes when it beats .

This unusual biometric technology is very reliable , Because it contains two different biometric information . The first is the shape of your heart —— A kind of “ biology ” Biological or static characteristics on , Such as fingerprints or iris patterns . The second is your heartbeat ： So-called “ Behaviorism ” Biological characteristics of —— Analysis is a dynamic process , Such information is more difficult to confuse or falsify . And face recognition 、 Fingerprint recognition is different , Human beings cannot cover up their heartbeat in any way , Unless death . These biometric information can be used to identify the person being examined . According to the researchers , The accuracy of the system exceeds 98%.

however , The problem with this technology is , It can only have a relatively high accuracy in close range recognition .

So can we recognize long-distance heartbeat ？

The idea of the Pentagon is to use infrared lasers to capture 、 Listen to those unique heart signals . And this laser method can be used in 200 Penetrate clothes within a distance of meters , Capture the beating frequency of the heart . future , The range of this distance will only become wider .

“ I don't want to tease you that you can complete this task in space ,” From the anti terrorist technical support of the Pentagon Steward Remaly Say ,“ But the distance must gradually lengthen .”

According to introducing , The prototype of this infrared laser monitoring technology is called Jetson, A technology called laser vibration measurement is used . It uses the principles of refraction and reflection of optics , Hit the target with a laser beam , So the data is processed by algorithm , The monitoring personnel can get the vibration parameters of the heartbeat of the target person .

It also means , This new monitoring technology is limited by clothing , Thin clothes （ Like a shirt ） The effect is better than the thick style （ Such as coat ）.

The researchers say , Detecting heart signals is more accurate than facial recognition , Because the latter often identifies women 、 There will be large errors when colored faces . The accuracy of this method of cardiac feature recognition is as high as 95%.

Of course , This technology also has a limitation , That is, it needs a heartbeat database to match . however , The Pentagon has collected biometric data in Iraq and Afghanistan , Now we are also collecting information about heart characteristics .

obviously , The Pentagon developed the technology to identify combatants in the theater , however , The developers of this technology claim that it has many other uses , For example, help doctors detect patients' heart problems remotely .

edit ： Smart core - Woods