The feds may soon know the way to your heart. Literally. Earlier this month, the forward-thinkers over at DARPA announced plans to develop new technologies capable of identifying human life through walls. The program, known as "Biometrics-at-a-distance," would essentially combine two pre-existing Pentagon projects: the Radar Scope, a device that can see through walls, and 2009's LifeReader, a system that uses Doppler radar to detect heartbeats. Though the military already employs a handful of devices to help soldiers see humans from behind walls, DARPA
