Portable biometric authentication device and terminal device using near field communication

Abstract

A portable biometric authentication device communicates with a terminal device using near field communication (NFC). The portable biometric authentication device includes; a NFC antenna, a power supply circuit that generates at least one power voltage in response to an electromagnetic field generated by the terminal device and received via the NFC antenna, a sensor subsystem that operates in response to the at least one power voltage and includes a biometric sensor that acquires biometric information from a user, and a control subsystem that operates in response to the at least one power voltage and includes a NFC controller that controls the communication of the biometric information to the terminal device using the NFC antenna.

Dependencies are inferred from the claim text.