• tal@lemmy.today
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    3 days ago

    I’d assume so, but more importantly, for both, there’s a cryptographic signature being performed by the card. The credentials never leave the card — there’s a private key on the card, and what goes out is a signature on the transaction, which is useless for doing other transactions.

    • CanadaPlus@lemmy.sdf.org
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      3 days ago

      That’s not true for all cards, at the very least. Skimming wirelessly by RFID is or was a thing. The whole backbone of the credit card system is designed to expect the number.