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Contributor I

How is possible to add two or more applications to one MIFARE DESFire card without sharing master key. In previous version  MIFARE Classic was possible to divide memory and write two apps with different keys.. is it possible that MIFARE went one step backward in that point of view? I need some hint where to start. I don't want that other provider could delete my app or format the card..

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NXP TechSupport
NXP TechSupport

Hello Drago Trebeznik,  the DESFire family supports multi application, with this you can set up different keys for different applications so if the same tag is used by different service providers one can no delete the other, you can set up if one key can delete, write or read etc.

please check the tips and hints  document to se examples also please check the datasheet to inquire more in the world of DESFire, if you have more questions please let me know.

Have a great day !

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