20 octubre 2015
Most optical fingerprint sensors today produce images by reflecting light from areas where the skin does not come in contact with a glass plate, a technique that captures details from only the very top layer of skin. In contrast, a new device images the ‘internal fingerprints,’ which have the same pattern as external fingerprints, but are about half a millimeter below the skin’s surface.
http://www.sciencedaily.com/releases/2015/10/151020145215.htm
