The plugin can detect a credit card type and if the number length and Luhn checksum are valid for the detected type of card. When they all match, the plugin visually signifies the detected card type ...

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 ...

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 ...