With a metal spudger and some pretty serious prying, we were able to remove the bottom grille. This is not easy, as Microsoft applied adhesive quite liberally.

The Microsoft team built the Kinect around PrimeSense's Reference Design.

Microsoft hasn't acquired Primesense yet. This indicates to us that as impressive as the hardware is, Microsoft's software is doing the heavy lifting, turning the sensor bar's array of data into a 3D mesh of your spatial position.