Added security with the CVM Authentication Process. What is Card Verification Method (CVM)?
The Card Verification Method (CVM) consists of a 3 or 4-digit numeric code that is printed at the back of the credit card along with (after) the credit card number, where the card holder signs in his signature on the card. This additional 3 or 4 digit numeric code is neither embossed on the card nor available in the magnetic stripe. This additional 3 or 4 digit is code is featured / incorporated on all Master Cards and Visa cards issued worldwide. Visa calls this security feature as CVV2 and Master Card calls it as CVC2.