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Handhelds Input Devices

Fingertip Mouse Fits On a Ring 45

Eric Smalley writes "The MicroPointing touchpad works by detecting the force your fingertip produces as it drags across the tiny device's three sensors, according to the company's patent application. The sensors are mounted on tiny posts spaced a few tenths of a millimeter apart — less than the size of a ridge on your fingertip."
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Fingertip Mouse Fits On a Ring

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Bell Labs Unix -- Reach out and grep someone.