When accepting credit card numbers over the phone from customers, you can easily identify the type of card without asking the customer. While each credit card has a unique string of numbers, in ...

Dashia is the consumer insights editor for CNET. She specializes in data-driven analysis and news at the intersection of tech, personal finance and consumer sentiment. Dashia investigates economic ...

A credit card authorization key is a secure code used to process transactions, confirming purchases and preventing fraud ...

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 ...

Kelly-Ann Franklin has spent more than two decades in journalism which has helped her build a wide knowledge base of business and personal finance topics. Her goal with editing is to ensure tough ...

Have you ever wondered what all the numbers mean on the front – and on the back – of your credit card? For a set of numbers millions of people encounter close-up on a daily basis, many of us have ...

That long number isn't random, and it identifies more than just whose account the card belongs to. Many or all of the products on this page are from partners who compensate us when you click to or ...

Learn how single-use credit cards enhance online shopping safety, their benefits and limitations, and how they can help ...

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 ...

Holly Johnson is a credit card expert and writer who covers rewards and loyalty programs, budgeting, and all things personal finance. In addition to writing for publications like Bankrate, CreditCards ...

Prime numbers are all the rage these days. I can tell something’s up when random people start asking me about the randomness of primes—without even knowing that I’m a mathematician! In the past couple ...