The Pentagon has a laser that can identify people from a distance—by their heartbeat

The Jetson prototype can pick up on a unique cardiac signature from 200 meters away, even through clothes

Everyone’s heart is different. Like the iris or fingerprint, our unique cardiac signature can be used as a way to tell us apart. Crucially, it can be done from a distance.

https://www.technologyreview.com/s/6...eir-heartbeat/

maybe a B.S. story to get the Ruskis all wound up.