Patent ID: 8334752

Claim:
A wireless tag communication system, comprising: first and second wireless tags of a plurality of wireless tags, and a wireless tag access device capable of accessing the first and second wireless tags when the first and second wireless tags are present in the vicinity of the wireless tag access device, wherein each one of the first and second wireless tags includes a first wireless transmission and reception device for communication with the wireless tag accessing device, a signal for the communication including identification data of the one of the first and second wireless tags, and a second wireless transmission and reception device for communicating with the other of the first and second wireless tags, the second wireless transmission and reception device being separate from the first wireless transmission and reception device, and including a signal radiation unit configured to radiate a first linking signal based on an instruction from the wireless tag access device, and a signal detection unit configured to detect a second linking signal radiated by the other wireless tag, and to provide the second linking signal to the wireless tag access device; and the wireless tag access device comprises: a radiation operation initiation unit that initiates radiation of a linking signal, from the signal radiation unit of the first wireless tag that is waiting for correspondence, for pairing the first and second wireless tags, the linking signal being independent from the signal for communication; a signal detection tag search unit that searches for the second wireless tag of which the signal detection unit that has detected said linking signal radiated from the first wireless tag; a correspondence detection unit that detects a correspondence between the first wireless tag that has radiated the linking signal and is waiting for correspondence, and the second wireless tag, based on a search result of the signal detection tag search unit; and a vicinity tag managing unit that manages, when the first and second wireless tags are present in the vicinity of the wireless tag access device and are paired via the linking signal, a pair of identification data including the identification data of the paired first and second wireless tags; wherein the signal radiation unit is a light emitter, the signal detection unit is a light receiver, and the first and second linking signals are light signals.