Computer hardware, circuit assemblies, integrated circuits, associated with receivers, transmitters, interrogators, readers, transponders, and tags all in the field of item tracking, item identification, document tracking, document identification, inventory management, the exchange of information to and from a customer database, and the exchange of information to and from a general database; computer software for item tracking, item identification, document tracking, document identification, inventory management, the exchange of information to and from a customer database, and the exchange of information to and from a general database; computer software for use in the field of wireless data communication; computer software for controlling receivers, transmitters, interrogators, readers, transponders, and tags