“”Surface computing uses sensing and display technology to imbue everyday surfaces with interaction. PlayAnywhere is a compact surface-computing system shown at TechFest last year. This year, we will show PlayTogether: two networked PlayAnywhere units exchanging video of each other’s desktop surface, including hands, game pieces, and drawing surfaces. PlayTogether offers interesting combinations of the real world with the virtual world: Playing chess across the network, you see your opponent’s hands and pieces superimposed on your own real pieces and desktop. We will show other technologies, including an application of depth-sensing video cameras, which work like a normal video camera but also calculate how far away the imaged surface is at each pixel, resulting in (R, G, B, Z)-valued images. We will show a game that combines the surface-computing idea with this exciting new technology.”” – Microsoft Research TechFest 2007Minority Report".