Patent ID: 8099604

Claim:
A communication system comprising a first information-communication device and a second information-communication device, the first information-communication device including: a first memory which stores user biometric feature information; a first communication unit capable of communication with the second information-communication device; a biometric sensor which retrieves user biometric information; and a first biometric authentication controller generating first biometric feature information used for a comparison based on the user biometric information retrieved by the biometric sensor; the second information-communication device including: a second memory which stores user biometric feature information; a second communication unit capable of communication with the first information-communication device; and a second biometric authentication controller conducting biometric authentication by comparing the first biometric feature information with second biometric feature information stored in the second memory; wherein the first information-communication device generates the first biometric feature information based on the user biometric information retrieved by the biometric sensor, and sends the generated first biometric feature information to the second information-communication device by the first communication unit; wherein the second information-communication device compares the first biometric feature information sent from the first information-communication device with the second biometric feature information stored in the second memory, and sends the second biometric feature information to the first information-communication device by the second communication unit when the compared biometric feature information matches; and wherein the first information-communication device stores the second biometric feature information sent from the second information-communication device in the first memory.