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Device for capturing signatures uses tiny LEDs created with piezo-phototronic effect

Georgia Tech researchers want to put your signature up in lights. Using thousands of nanometer-scale wires, the researchers have developed a sensor device that converts mechanical pressure — from a signature or a fingerprint — directly into light signals that can be captured and processed optically.

Fuente : http://www.eurekalert.org/pub_releases/2013-08/gio…

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