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Mitsubishi Electric has developed the world's first optical fingerprint sensor that accurately detects the unique anomalies of finger tissue by reading “inner skin finger prints”.
It considerably increases recognition rate, yet without the need for direct contact between finger and the surface of the sensor. Even wet fingers or those with cuts or other anomalies will result in accurate detection.
It works by optically detecting the changes in light transmittance in the dermis according to fingerprint dents and bumps. Light is applied from the nail side, and the light pattern penetrating the finger is shot by a camera placed on the fingerprint side. This approach enables fingerprint images to be detected without contact regardless of humidity on the finger surface.
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