![]() How can I keep my credit card number safe?Ī credit card number is a sequence of digits assigned to individual card members that signals to merchants, issuers and networks that your credit card is a legitimate form of payment.This means that there are over 1 trillion possible credit card numbers for each card issuer! ![]() Credit card numbers sometimes feel long and cumbersome to fill in when you're shopping online, but did you know that each of those digits is a critical part of any successful transaction? This 15 (sometimes 16) digit number is designed in a specific sequence to communicate vital authentication factors about the card member, issuing bank and credit card network.
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