Estudante de Engenharia Informática apaixonado pela área; algures em Portugal.
Administrador da instância lemmy.pt.
Computer Science student, passionate about the field; somewhere in Portugal.
lemmy.pt instance administrator.
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As far as I know, modern cards don't just send your CC info to terminals, they do some form of a cryptographic handshake (probably a pubkey signature or similar) which gets confirmed by your bank. I believe Caveman was talking more about online shopping, where you have to enter your card number, expiration date, CVC and often your name too.