Prism 200, which allowed its holder to essentially see what folks were doing on the other side of a wall. Since then, we've seen plenty of devices that boast the same claims, but it wasn't until recently that the makers of the Prism 200 created a device that can actually see inside those walls. Looking something akin to an old school punch clock, Cambridge Consultants' Sprint in-wall radar imaging system provides 3D renderings of items embedded in walls, floors, and even ceilings. Where as existing X-ray systems require access to both sides of a wall, Sprint's radar setup allows users to see what's going on inside without dual access. As you might imagine, Cambridge is pushing this thing as a security tool, allowing for detection of bombs, drugs, dead bodies -- you know, the usual bad guy stuff. Sprint is currently undergoing testing. Full PR after the break.