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Credit Card companies have rules in their merchant agreements that prevent companies from using credit card numbers as unique identifiers.
by bound008 13y ago
Credit Card companies have rules in their merchant agreements that prevent companies from using credit card numbers as unique identifiers.
- mseebach 13y agoThe last four digits of your CC is ~13 bits, the type of card a few more. That, plus your name, and they should have a fairly good ID for you.