Forum › MIFARE general topics and applications › Writing on Mifare classic 1K card. › Reply To: Writing on Mifare classic 1K card.
Hi,
I am not sure what happen in your case for this issue. But you should take in mind that a user may remove the card from the antenna area before all operations are complete. This is called “tearing” and you should look at features of “anti-tearing”.
The MIFARE Classic does not support anti-tearing by hardware, but you can implement it in software. You define two sets for the data you want to write. One is the backup of the other. If you could write two times and both were successfully, then the content is accepted. Otherwise you know the previously write operation was interrupted and you use the backup value and back off the other one.
Kind regards,
The MIFARE Team
I am not sure what happen in your case for this issue. But you should take in mind that a user may remove the card from the antenna area before all operations are complete. This is called “tearing” and you should look at features of “anti-tearing”.
The MIFARE Classic does not support anti-tearing by hardware, but you can implement it in software. You define two sets for the data you want to write. One is the backup of the other. If you could write two times and both were successfully, then the content is accepted. Otherwise you know the previously write operation was interrupted and you use the backup value and back off the other one.
Kind regards,
The MIFARE Team
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