How would one determine what version of Mifare a system is using, if one only has access to the fob?
For example: https://www.amazon.com/MIFARE-Blue-Key-Fobs-RFID/dp/B011PJXG0U
From the product info this cheap blue fob can be used for any of the Mifare standards. What is the minimum equipment that one would need to discern the version and whether or not it is encrypted?
Thanks!