Credit cards are the first common 2 factor authentication.
You need physical possession of the card *as well as* the 4 digit PIN. A thief may get the card, but won’t have the PIN. If you follow security.
Yes, a 4 digit PIN seems unsecure by modern standards. But it is an old standard. The main security is physical possession of the card, or card details. Which is why it’s a huge deal when websites have a breach and leak thousands or 10s of thousands if card details.
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