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Minimum requrements for storing last 4 digits of credit card number?

We have a merchant website that uses Autorize.net's CIM and AIM. Our users may have multiple credit cards so we'd want to give them opportunity to distinguish between credit cards that they use on ...

asked Sep 7 '12 at 9:27

Andrey Botalov
1,1321031

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Minimum requrements for storing last 4 digits of credit card number?

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