ZIP codes are five-digit numbers, such as the famous 90210. Why credit card postal codes and ZIP codes matter Your postal code or ZIP code acts as a security measure.

Your billing zip code, or credit card postal code, is the five-digit number on the bottom right, which in this sample is 90210. This would be the zip code associated with your billing address. It ...

Do you know what happens if you enter your credit card PIN code backwards? Does the ATM actually alert the police? The advisers recommend different measures to prevent theft during cash withdrawals, ...

Will they require a PIN code for authentication or simply a signature? Smart cards are much more secure than traditional credit cards, which store your account information — unencrypted — on a ...

Hansen, a 27-year-old Colorado resident, figured out what was going on pretty quickly. She was being charged extra for using her ATM card and PIN code to buy things at retail stores. Hansen was ...

Why are zip codes and postal codes important when it comes to credit card transactions and when do they overlap for Canadian credit card users?