card 2 a password storage 33 stores a password for using the ic card 2 in general passwords are stored in ic cards 2 when the cards 2 are distributed to users an id storage 34 stores an id from which the ic card 2 is identified in general ids are stored in ic cards 2 when the cards 2 are manufactured a cipher key storage 35 stores a cipher key assigned to the ic card 2 generally cipher keys are stored in ic cards 2 when the cards 2 are distributed to users a card identification unit 36 cooperates with the card identification unit 27 to determine whether or not the ic card 2 is used by a legitimate user when the ic card 2 is inserted in the ic card reader 1 an aging device 37 can determine whether or not a predetermined time period has elapsed when the aging device 37 operates it is not necessary to supply power thereto when the aging device 37 is supplied with power device charging power via the contact unit 31 from the ic card case 3 described later it starts time measurement the aging device 37 is referred to by the card identification unit 36 when the ic card 2 is connected to the ic card reader 1 and the card identification unit 36 performs identification the aging device.