Patent ID: 8812863

Claim:
A biometric device comprising: a first portion including: a processor; a biometric sensor operatively coupled to the processor and configured to acquire biometric data from a user; and a transmitter operatively coupled to the processor; and a second portion releasably coupled to the first portion; wherein the processor is configured to: determine whether the second portion is coupled to the first portion; operate in an enrollment mode while the first portion is coupled to the second portion; receive the biometric data while operating in the enrollment mode and, in response thereto, generate an enrollment code based at least in part on the biometric data; transmit a signal containing the enrollment code using the transmitter; operate in an authentication mode while the first portion is decoupled from the second portion; receive the biometric data while operating in the authentication mode and, in response thereto, generate an access code based at least in part on the biometric data; determine whether the access code matches the enrollment code; and transmit a signal containing the access code using the transmitter in response to determining a match between the access code and the enrollment code.