You’re at the checkout screen after an online shopping spree, ready to enter your credit card number. You type it in and instantly see a red error message ...

All mainstream credit card numbers obey a mathematical trick designed to catch the most common typos. It’s called the Luhn algorithm, named after IBM researcher Hans Peter Luhn, who patented it in ...

What is a virtual card number and how do I get one? If you’re a frequent online shopper, you’re more at risk of becoming a cybercrime victim. In fact, a recent study conducted by Security.org found ...

Your credit card number isn’t just a random string of numbers. It identifies the credit card issuer, financial institution and your account. It also validates your card for security purposes. Many or ...

Millions of businesses process credit card transactions every day, and those businesses need a way to check to see if a credit card is active or not or if it's a fraudulent card. The issuing ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Amazon delivery dates have been all over the ...