Patent ID: 8838989

Claim:
A method of facilitating, at a base device, an efficient exchange of messages in a system for authenticating access to said base device, said authenticating based on a data set comprising a plurality of biometric templates, said method comprising: selecting a particular biometric template from among said plurality of biometric templates stored at said base device; determining a first location, in said plurality of biometric templates stored at said base device, for said particular biometric template; transmitting, to a peripheral device, an indication of a second location, said second location for said particular biometric template among a plurality of biometric templates stored at said peripheral device, said second location corresponding to said first location; prompting for input to be provided to said peripheral device; receiving a message, said message including an authentication result determined, at said peripheral device, from a comparison of said particular biometric template to a biometric candidate derived from said input; and controlling, based on said authentication result, access to said base device.