October 17, 2011 – The project is called SideBySide, and comes from researchers Ivan Poupyrev and Karl D.D. Willis. It combines a camera with a projector so that the two on-screen (or on-wall) images can actually interact with each other. Each unit consists of a modified DLP projector which outputs a single color of visible light and also an invisible infrared image. The IR image is detected by the camera of the second device, letting it know what the other device is up to, and where.