Microsoft builds gesture-sensing PC keyboard

Microsoft is experimenting with ways to combine trackpad gestures on traditional PC keyboards. In a research paper published recently, the software maker reveals a prototype that combines an Apple keyboard with an array of infrared proximity sensors that are mounted above the key caps. No external sensors are required, and the end result is something similar to Leap Motion. The prototype keyboard, which looks like a regular thin keyboard, supports gestures like swipe and pinch-to-zoom to navigate documents.

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