Used to validate that a card number is real and has been inputted correctly, the card verification code or CVC is a unique value that is calculated from the data encoded on the magnetic strip of some kinds of credit cards, including a MasterCard credit card. The code helps prevents fraud and errors in transactions.
Card Verification Code
UniPay Gateway: Open Source Payment Gateway
How to Choose the Best Payment Solution
How to Own a Payment Gateway
What is a Payment Gateway
What is Recurring Billing?
How Payments Work
What Should an Ideal Payment Platform for Investors Look Like?