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How to use Xiaomi access card? I can't recognize it.

Take MIUI9 development version as an example. The reasons why Xiaomi 9 can't recognize the access card are: 1, and the access card type is not supported. For security reasons, the access control card swiping function of Xiaomi mobile phone will only support MIFARE 1 card with unencrypted NFC band of 13.56MHZ, and NFC hardware only supports IC card, not ID card access control system. Bank card with door card function, stored value consumption, bus consumption. The function of the door card cannot be simulated for the time being.