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Deep in the stodgy bowels of the USPTO sits a folder full of Apple patent applications specifically for gesture controls. A few more pages from that expanding tome were just made public, and the concepts unearthed are certainly thought-provoking. The first involves using a proximity sensor in addition to the touch panel to register gestures in 3D. For example, you could use three fingers to mark out the corners of a triangle on the screen and then "pull up" and pinch to create a pyramid for use in a CAD application. The second idea involves gestures based on intuitive "physics metaph
