Patent ID: 8400303

Claim:
An information processing system comprising: an information processing device arranged in a vehicle; a portable device storing unique information; a specification information recording unit configured to record specification information having a predetermined relationship with the unique information; a first transmission unit configured to transmit a request signal requesting transmission of the unique information; a first reception unit configured to receive the unique information transmitted from the portable device; a position specifying unit configured to compare the received unique information with the specification information and specify whether or not the portable device is inside the vehicle; a detection unit configured to detect a human inside the vehicle; an alarm unit configured to set off an alarm; and an alarm control unit configured to control the alarm unit so that the alarm is set off when the portable device is not inside the vehicle and the human is not detected inside the vehicle and the alarm is not set off when the human is continuously detected inside the vehicle from when specified that the portable device is not inside the vehicle, wherein the portable device comprises: a unique information recording unit for recording the unique information; a second reception unit for receiving the request signal from the information processing device; and a second transmission unit for transmitting the unique information recorded in the unique information recording unit in response to the request signal.