7
MIFARE 7-byte CSN Support - The reader firmware will be able to
distinguish between a legacy MIFARE Classic card and a “next-
generation” MIFARE classic card. The next generation MIFARE cards
have a unique 7-byte serial number, not 4-byte. When presented to a
reader, the next-gen card causes the reader to output a 56-bit CSN.
Older cards still output a 32-bit CSN.
* Only 125 KHz (26 bit) Prox card format have been evaluated by UL.