A control method of an information processing apparatus for monitoring movement of users each carrying an information transmission/reception device into and out of a predetermined area and for controlling security operations for the predetermined area, characterized by comprising:
- a communication step for communicating with each of the plural information transmission/reception devices;
- a position recognition step for acquiring position information on the respective positions of the plural information transmission/reception devices;
- a record storage step for storing position record information showing a record of the position information for a predetermined period;
- a position judging step for judging whether each of the information transmission/reception devices is located within the predetermined area based on the position information;
- a first security command step for commanding setting or canceling of a security condition based on the judgment result given in the position judging step;
- a second security command step for receiving information on the requirement for setting or canceling of the security condition from the information transmission/reception devices through the communication unit, and for commanding setting or canceling of the security condition;
- and
- a security condition selecting step for selecting either the command by the first security command step or the command by the second security command step based on the position record information.