MULTIFLEX

Radio frequency based multiple frequency, multiple communications protocol reading devices, namely, RFID readers, RFID reader/writers for reading data from and writing data to the memory of an RFID transponder, interrogators for determining when an RFID transponder is within the range of a reader or reader/writer by sending signals into the space surrounding the interrogator, and a programmer for writing computer software or data to the microprocessor of an RFID transponder via radio frequency signals