Experts from the University of Buffalo proposed an original method of biometric identification of the owners of mobile gadgets and computers. The key will be the heart of the master. You just need to be close to your device, which is blocked. Researchers have created a method for determining a person by size, movement and heart shape during his work. To do this, decided to Doppler radar low level. In continuous mode, it authenticates the one who uses the gadget at any given time. It is worth noting that a face or fingerprint scanner allows you to determine the identity only once – when turned on. The new sensor is in continuous operation. As soon as the host moves away from the device, access to the interface is blocked. At the moment, the system is a set of boards that are connected to the computer. Soon, the authors want to make the device so compact that it could be installed, say, in a keyboard. Scientists start from the fact that in a healthy, adult person the heart remains unchanged in shape. The advantage of the technique is that there is no need for direct contact with the gadget, it is enough to be near it. The disadvantage is that you can quietly steal a mobile device and immediately unlock it, while the owner is nearby.