RFID handset has RFID reading and writing function, which can read RFID tags. It is a PDA (portable mobile hardware) with specific functions. The combination of RFID and PDA not only maintains the original function of PDA. The frequency band of RFID handheld function includes low frequency, high frequency, UHF, active and so on. The reading distance of UHF RFID handset is 1 ~ 3M, which can not be reached by low-frequency and high-frequency RFID handset.