An information processing device receives detection information including a position of a first terminal device corresponding to a position where the first terminal device detects a beacon signal sent from a given beacon device, if no detection information is received from any of a plurality of terminal devices for a given time or more, specifies peripheral equipment based on a storage configured to store position information of the peripheral equipment being present in a position beyond an area where at least one of the plurality of the terminal devices receives the beacon signal if the beacon device is present, notifies coupling information on the specified peripheral equipment to a second terminal device being present in a position communicable with the specified peripheral equipment, obtains first information from the specified peripheral equipment via the second terminal device, and transmits the first information to a given device.