When the user inputs an instruction for accessing storage information stored in a fingerprint identification unit to a host computer, the host computer sends an identification instruction command to the fingerprint identification unit. A fingerprint detection section formed of an LED, a lens barrel, a CCD, and an A/D converter read the fingerprint of the user, identifies the fingerprint by using an identification controller, and allows the user to access the storage information only when the identification result is affirmative. The identification result is also sent to the host computer simultaneously.