As Wired’s DangerRoom Blog notes:
Picking up “life-form readings” may sound like science fiction straight out of Star Trek, but the Defense Department has been able to do it for years now.
In 2006, Darpa developed Radar Scope,which used radar waves to sense through walls and detect the movements associated with respiration. A year later, the Army invested in LifeReader, a system using Doppler radar to find heartbeats. More recently, the military’s been using devices like the AN/PPS-26 STTW (“Sense Through the Wall“) and TiaLinx’s Eagle scanner, which can sense the presence of humans and animals through walls.
My question is — is there a way to jam this kind of sensor?