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RE: How to recognize data on your credit card

Credit cards are a hilarious form of security. Basically all confidential information is rightly printed on the card, so a thief has all he needs in order to empty the card. Only recently they've introduced passwords for online spending, but not everyone has activated them.

I just feel like banks take us for idiots, I'd rather have a real secret private key stored offline, than some pseudo-security with a bank card.

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Exactly. Credit cards are extremely insecure! Now there are some, that need you fingerprint to approve transaction. But it's not common yet

Fingerprints can also be easily gathered by a smartphone app. Fingerprints are not as secure as they look in movies.