Hello,
I try to dump a working card (B) then restore to my card (A). So both of them have the same information. I try with Elevator Access Control, both cards work. But when i change the CN on card A, it does not work (the data in p0/p1 till match with card B). So I think the main data were save on server side, and printed numbers were used for other management purpose.
I have 3 cards with different program:
Card B: The reader can read and can access (1 beep when contact)
Card A: The reader can read but not access (1 beep when contact)
Card C: The reader can not read (no beep)