Follow Your Heart: Darpa’s Quest to Find You by Your Heartbeat

Follow Your Heart: Darpa’s Quest to Find You by Your Heartbeat | Danger Room | Wired.com: "The U.S. military can see you breathing on the other side of that wall. It can even see your heartbeat racing while you crouch behind the door. But if you think running farther away or hiding in a crowd will make you invisible to the Defense Department’s sensors, you might be in for a surprise. The Pentagon’s geeks are looking to tweak their life-form finder so they can spot your tell-tale heart no matter what you do."