Tuesday, September 16, 2014

"The signal is coming from inside the house!"

Slowly, in the dark of night, the robot orbits your house. Using entirely passive "x-ray vision", without emitting telltale RF beams of its own, it builds a map of the floorplan, the furniture, and where everybody is.

It doesn't need to use an active emitter for its see-through-walls magic, you see, because it's using yours.

It's still right at the edge of SciFi, but only barely.