The improved smart card of the present invention preferably comprises a CPU, memory, and a fingerprint reader including a sensing surface. Preferably, the sensing surface is located along a surface of the smart card so that a user's thumb is naturally positioned over the sensing surface when the card...http://www.google.com.au/patents/US6325285?utm_source=gb-gplus-sharePatent US6325285 - Smart card with integrated fingerprint reader
