To control employees and using states of respective devices to be used while improving a security control of a building without necessitating the security of the personnel.

A host computer 101 having an information processing part and auxiliary storage means is connected to LAN 103. Multiple terminals 104 and 105 are connected to the LAN 103 and readers/writers 104 and 105 for IC cards are also connected thereto. The host computer 101 is connected to a public circuit network 107, using information collecting means 109 for vending machines 110 and 111, elevator control means 112 for elevators 114 and 115, and automatic door control means 117 for automatic doors 118 and 119 respectively. These devices are usable by the IC card and the using states are centrally controlled by communicating recording data between the IC card and the host computer 101.