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Uploaded on Dec 16, 2009
User interface research from Xerox EuroPARC circa 1991. The sketching segment might be the earliest instance of the multitouch "pinch" gesture (a la iPhone, etc.). Please note that the "Working prototype" segment at the start is real, but the three "Envisionment" sections were scripted demos for the sake of example; the technology of the time was not yet up to the concept.