Passive RFID tags integrated by the chip and antenna, the tag has no internal power supply, it relies on the electromagnetic induction from the RFID reader issued after the conversion into a source of electricity.  When the tag receives a signal of sufficient strength, it will active the RFID tag chip circuit and allow to read and write process.

Because passive tags have the advantages of economic, small size and no power source need. RFID tags currently on the market are mainly passive.

Applicable industries include inventory management, retail, catering, medical, library and so on.