AnsweredAssumed Answered

4 Byte or 7 Byte UID Mifare Classic

Question asked by Mark Hunter on Feb 7, 2020
Latest reply on Feb 10, 2020 by IvanRuiz

Hi ,

 

Can anybody tell me how I can tell if my Mifare classic chip is a 4 byte or 7 byte UID please? 

 

I have the NXP Mifare reader app on my phone but I don't know which part of the data relates to the UID byte size. 

 

Many thanks 

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