Can Google Fix Gesture Tech With Tiny, All-Knowing Sensors?

Ivan Poupyrev looks like he's playing the world's smallest violin. Inside a conference room at Google's San Francisco office, there's a screen in front of him displaying raw output data from a tiny sensor just below his hand. This is Project Soli, which Poupyrev has been working on inside Google's top-secret ATAP division. And instead of shooting one beam and collecting a single point of data, the Soli chips create a wide radar bulb, designed to be big enough to see your entire hand all at once. It only cares about motion---like an eagle, Poupyrev says, all Soli knows is that there's something moving.