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Summary:A mobile telephone (1), when being folded, is set in a lock state by an opening/closing detection and lock mechanism (50), and then a control circuit (30) stops supply of an electric power to a fingerprint authentication unit (60). In this state, upon detection of an incoming call from an external apparatus, the control circuit (30) restarts the supply of the electric power to the fingerprint authentication unit (60), and when a user is authenticated as a legitimate user by the fingerprint authentication unit (60), instructs the opening/closing detection and lock mechanism (50) to carry out an unlocking operation.
Bibliography:Application Number: CN2004190439