Internal fingerprint sensor peers inside fingertips for more surefire ID

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.