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Why can't they be stored?

Is it a legal requirement to prevent merchants without the CCV from using the credit card?

...oh wait



Because the CVV is used to indicate the "presence" of the customer at a transaction. CVV1 (which is on the magstripe) is used to indicate "card-present" physical transactions, CVV2 (printed on the back) is used for "customer just typed this in" non-physical transactions.


That makes much more sense. Thank you.




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