Forum › MIFARE general topics and applications › Can we use access bits of MiFare 1K to store data? › Reply To: Can we use access bits of MiFare 1K to store data?
Hi Kalyani,
No, you need the access bytes to define how the sector can be accessed. But you can set the access bits to C1 = C2 = C3 = 0. In this case key A or key B can be used for authenticate and key A for writing to the sector trailer. The byte of key B and also byte 9 can be used for private purposes. You cannot do the same for key A, because a read of the sector trailer return always zeros for bytes 0 to 5.
The TapLinx team
No, you need the access bytes to define how the sector can be accessed. But you can set the access bits to C1 = C2 = C3 = 0. In this case key A or key B can be used for authenticate and key A for writing to the sector trailer. The byte of key B and also byte 9 can be used for private purposes. You cannot do the same for key A, because a read of the sector trailer return always zeros for bytes 0 to 5.
The TapLinx team
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