It was the epitome of sci-fi gadgetry. In Minority Report, Tom Cruise, playing a cop who fights crimes that are to take place in the future, gestures into the air like an orchestra conductor wearing a space glove--only he's calling up computer images that float before him in holographic splendor.
That far-out vision of computing may be coming to a PC near you sooner than you think. A company called FingerWorks has developed a computer keyboard that lets you complete such simple functions as clicking, scrolling and dragging by gesturing or moving your fingers across a new type of touch-and motion-sensitive...
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