Mifare Classic – General Purpose Byte

Forum / MIFARE general topics and applications / Mifare Classic – General Purpose Byte

  • 29. June 2022 at 9:56
    I use Mifare Classic 1K cards for secure entry. I have been producing them with the General Purpose Byte (sector 3 byte 9, after the three access control bytes) set to the factory default of 0x69. For these non-MAD cards, is it allowable/possible for a reader program to accept and read the card, assuming that the proper key(s) are supplied?
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    Re: Mifare Classic – General Purpose Byte

    29. June 2022 at 10:25
    Note: I should have said "block 3 byte 9".
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