LightBeam is pico projector that uses a webcam to track and reorient its display to suit any ad hoc surface, the piece of paper in your hand, the cover of a book, or the picture frame on your desk.
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The technology was developed by German researchers at the Darmstadt Technical University. Working prototype of LightBeam systems was constructed based on the Microsoft Kinect and a special camera that allows the system to create an interactive projection. Аs а tools of system controlling can be used any ordinary objects, which affords rotation, like glass or water bottles. Fore more information watch video below.