Biometric identification has become part of everyday life. We’ve got facial recognition in airports, cars that can be unlocked just by looking at them, technology that detects a person’s unique way of walking, and of course the ubiquitous fingerprint, used for everything from smart phones to event ticketing. Next on the agenda? Your heartbeat.

As MIT Technology Review reports, the Pentagon has developed a laser that can identify people — from a distance — by their heartbeat. The technology, known as Jetson, uses laser vibrometry to identify surface movement on the skin caused by a heartbeat, and it works from 200 meters away.

Read more here