RFID reading/writing
so searched codes found how read sectors , bits , blah blah.
the code rewriting first writes want , reads it. going spa hotel , want read cards's info stored (especially friends's cards in order troll them
) , write on own card (which empty). how can this?
the device using- rfid rc522
+ uno r3
the code rewriting first writes want , reads it. going spa hotel , want read cards's info stored (especially friends's cards in order troll them

the device using- rfid rc522
+ uno r3
it unlikely information stored on card (although wrong). each card has unique id , controls can or cannot access.
Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > RFID reading/writing
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