PROBLEM TO BE SOLVED: To provide a system capable of managing time spent in stay by a facility user in a managed site.;SOLUTION: The detector system for stay behavior is equipped with: an IC card for storing expiration data including identification information of opening and closing gate, and a right of passage information including the identification information of opening and closing gate; and a device for opening and closing gate, in which the expiration data is read from the IC card, the passage term time data of the device for opening and closing gate is judged if the expiration data is over, a root table associated with the identification information of opening and closing gate and the information of required time is referred to by using the identification information of the opening and closing gate on the passage permission information for the IC card, and the information of corresponding required time is chosen, and this is added to the present time information and while the passage term time data is calculated, the expiration data including this is created, and the expiration data recorded on the IC card is updated.;COPYRIGHT: (C)2008,JPO&INPIT
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