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What is the default CSN output for Mifare Classic, Mifare Desfire EV1, and HID iClass?

The MiFare Classic CSN is 32-bits.
The MiFare Desfire EV1 CSN is 56-bits.  We technically can read and report up to 64-bits if needed via a configuration card.
The HID iClass CSN is 64-bits.

The term CSN stands for "card serial number".  It's sometimes called UID or "universal identifier" or "unique identifier".

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