A card type device is mounted on a card slot of an electronic appliance. In the card type device, a transparent cylindrical-shaped roller is provided at an edge portion of a housing in such a manner that an outer peripheral plane of this roller is projected from the edge portion. Also, a one-dimensional...http://www.google.de/patents/US20050100197?utm_source=gb-gplus-sharePatent US20050100197 - Card type device capable of reading fingerprint and fingerprint identification system
