DARPA’s (internet’s inventors) latest invention is the “Radar Scope”. The new “Radar Scope” offers warfighters the same x-ray vision like SuperMan which sees through walls. The Radar Scope is a light-weight, low-cost, through-wall personnel detector that uses stepped-frequency radar to detect subtle changes in Doppler signature of the returned signal. Put simply, it is a motion detector that can see through walls. $1000 for this extreme voyeur gadget.