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clonenfcuniqueidentifiermifareserial-number

is UID of mifare classic editable?

It would be nice if UID is write-protected so that I can use it to detect card clones. So, can it be modified?

Solution

  • Yes and no. The standard Mifare Classic has a locked sector 0, where the UID is stored. However, if you Google changeable uid mifare, you'll find several (comparatively expensive) cards for sale with sector 0 unlocked.