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 ...

The numbers on a credit card help identify the credit card network, the company that issued the card and the cardholder.

Sophie Venz is a former Deputy Editor at Forbes Advisor. She is an experienced editor and features reporter, and has previously worked in the small business and start-up reporting space. Previously ...