A padlock having a body and a shoekle comprises a fingerprint sensor, a fingerprint data memory device and an electromagnetic device activated by a sensed and matched fingerprint to unlock the shackle from the body. Unlock and programming buttons respectively activate the sensor and configure the data...http://www.google.fr/patents/US20040255623?utm_source=gb-gplus-shareBrevet US20040255623 - Biometric padlock
