Pages

Thursday, August 04, 2011

Cracking the credit card code

Have you thought much about those lengthy account numbers on your credit cards? Aside from indicating which specific company issued the card, they also let the informed observer know whether a particular card is real or fake. It involves math (something called the Luhn algorithm), which explains why I've never really had an interest:


(from Mint Life, via Wall Stats)

No comments:

Post a Comment