An information processing apparatus includes a communication unit to communicate with an external device, a receiver to receive a signal from an identification information transmitter that transmits at least one of identification information of a user of the external device and identification information of the external device, a measurement circuit to measure strength of a received signal, a storage unit to store correlation data between a relative distance to the identification information transmitter and the strength of the received signal, a calculation circuit to calculate from the field intensity of the received signal the relative distance based on the correlation data, an operation controller to control operation of the information processing apparatus based on a result of calculation of the relative distance, and a correction unit to correct the correlation data based on the field intensity of the received signal from the identification information transmitter disposed at a predetermined range.