Computer hardware, radio frequency identification (RFID) receivers, RFID transmitters, and RFID readers, and radio frequency identification tags all 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 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 radio frequency identification; computer software for controlling radio frequency identification receivers, transmitters, and readers