Mifare Type Identification - Plus SL3 vs. DESFire

[janulo]

I would like to ask, what is recommended procedure to differentiate between Mifare Plus SL3 and Mifare DESFire card, as both types returns SAK=0x20. According to AN018436, it's not recommended to use ATS to differentiate the IC type, as ATS can be customized.

Currently I use NXP library DESFire command GetApplicationIDs, which:

• if success, I continue with DESFire reading,
• if error, I continue with Plus SL3 reading.

Thank you in advance for any comments.

[Jorge_Gonzalez]

Hello Jan Matik,

As the SAK would be the same, then during initialization and anticollision the MIFARE Plus cards cannot be differentiated from MIFARE DESFire cards. I believe your workaround is good. You can also try to send the GET_VERSION command, which is supported by MIFARE DESFire but not by MIFARE Plus ICs.

Best Regards!,
Jorge Gonzalez

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