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What is a CIN code?

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We require a CIN or card identification number on all credit card orders. The CIN is an important security feature that appears on the back of Visa, MasterCard, and Discover credit cards and on the front of American Express credit cards. This ID number is a three- or four-digit number that provides a cryptographic check of the information printed on the card. This helps validate that the customer placing the order is actually in possession of the card, and that the account is legitimate. more
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