Behaviour has been observered where some system using Mifare Classic credentials will identify with one SAK (0x08/18) on a basic search (Wake up) but when the block 0 is dumped, the SAK appears to be different (0x88)
This is because the SAK reported on a Wake up is not coming from Block 0 but is instead burned into the card, The SAK in Block 0 is merely a Vanity SAK.
If the dump is loaded onto a Magic Mifare Classic that Mirrors the vanity SAK as the actual SAK on Wake up it will tell the system that the credential is a duplicate & to deny access.
