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What's behind new BlackBerry optical trackpad

RIM has posted an explanation of the technology, and it turns out that the trackpad works much like the optical mouse you use with your desktop PC.

diagram of trackpad technology
Inside BlackBerry

Ever wonder how the optical trackpad on the newest BlackBerry phones works?

Research In Motion's official Inside BlackBerry blog has posted an explanation of the technology, and it turns out that the trackpad works much like the optical mouse you use with your desktop PC: it uses a low-resolution infrared camera to capture movement across the surface and translate it into direction.

Read more of "The science behind the new BlackBerry optical trackpad" at ZDNet's The ToyBox.