Scientific American

The Math Trick Hidden in Your Credit Card Number

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 ...
Nasdaq

Why the SmartMetric Biometric Technology Is the Ultimate Identity Validation for Credit Cards and Why Other Biometric Card Designs Fail

NEW YORK--(BUSINESS WIRE)-- SmartMetric, Inc. (OTCQB: SMME): Years of research and development have gone into the design and creation of what SmartMetric considers the most advanced biometric card ...
Business Wire

SmartMetric Biometric Credit Card Brings the Next Generation of High Security to Payments Cards Using SmartMetric Developed Biometric Scanning Technology Inside the Card for ...

NEW YORK--(BUSINESS WIRE)--SmartMetric, Inc. (OTCQB: SMME): Taking security for credit and debit cards to the next level, SmartMetric has created a nano biometric fingerprint scanner that sits inside ...

Credit Card Authentication: What It Is and How It Works

Credit card authentication is a way of verifying that a person attempting a credit card transaction is who they say they are and that they are authorized to use that card.
Investopedia

Luhn Algorithm: Verify Credit Card Numbers and Ensure Accuracy

Jason Fernando is a professional investor and writer who enjoys tackling and communicating complex business and financial problems. Khadija Khartit is a strategy, investment, and funding expert, and ...