Thursday, July 25, 2013

Everything You Wanted To Know About Credit Card Numbers

Most of us carry credit cards and ATM cards. These, typically, have sixteen digits on the front. These digits are the unique account number for the card. For obvious reasons, just any sixteen digits will not work, they follow pattern.

Here's a fictitious card I made up:


The first few characters of the card number describe the type of card.

Some cards are Visa, some Mastercard, some are American Express …

For the rest of the story:

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