Using the hand as a joystick: "ScienceDaily (May 26, 2011) — Up until recently, users needed a mouse and a keyboard, a touch-screen or a joystick to control a computer system. Researchers in Germany have now developed a new kind of gesture command system that makes it possible to use just the fingers of a hand."
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Not moderated but I do delete spam and I would rather that people not act like assholes.