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dtbrfid on 27 Jul 20The working frequency of HF RFID labels is 13.56mhz.13.56MHz is mainly composed of two standards: ISO14443 and ISO15693. The ISO14443 standard has a short identification distance but low price and good security. It is often used as a bus card and access control card. The biggest advantage of ISO15693 is its recognition efficiency. The recognition distance can be extended to more than 1.5 meters through a reader with higher power.