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RFID radio frequency identification: it is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not need manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and multiple electronic tags at the same time, which is fast and convenient to operate.
RFID reader (reader writer) communicates wirelessly with RFID electronic tag through antenna, which can read or write tag identification code and memory data. A typical reader consists of a high-frequency module (transmitter and receiver), a control unit, and a reader antenna. Among them, electronic tags are also called RF tags, transponders and data carriers
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.
