The Pentagon has a laser that can identify people at a distance – by heartbeat

Each person’s heart beats in different ways. Heartbeat along with the iris or fingerprint can be used to identify a person. A laser designed for the Pentagon does it at a distance.   The new Jetson device, developed for the Pentagon by order of US special forces, can identify people without seeing their faces. Instead, it detects their unique heartbeat using an infrared laser at a distance of up to 200 meters. The device is now being tested.   For reading the pulse is often used contact infrared sensors. Jetson also uses a technique known as laser vibrometry. The technique is able to recognize the heartbeat even through clothes – such as, for example, a shirt and jacket, but not as dense as a winter coat.   To create the Jetson, an off-the-shelf device was adapted, which is typically used to detect vibration at a distance in structures like wind turbines. The device was modified so that the laser could be kept on target. Now it takes about 30 seconds to receive the return signal, so for now the laser is only effective when the tracking object is sitting or standing. According to the authors of the project, Jetson data achieves more than 95% accuracy under good tracking conditions, and the result can be even better.   Today, “heart signatures” in the field of security. The Canadian company Nymi has developed a pulse sensor on the wrist as an alternative to fingerprint identification. The technology has been tested by the Halifax Building Society in the UK.   As for Jetson, the authors of the technology hope that in the long term this technology can find much more use. For example, a doctor can remotely scan arrhythmias and other pathological conditions of the heart or monitor the condition of patients without connecting them to the machines.