enter your PIN Number when you are asked for your CVV Number. Source, diners Club, unique card cod" it helps users to be safe and to get protection from frauds and scams. It is always the last 3 digits in case of visa and MasterCard. Card security code Wikipedia, the algorithm is changed a bit along with the line to make the number more secure and safe. Processes or transmits card holder data. The cvvcvc code Card Verification ValueCode is located on the back of your creditdebit card on the right side of the white signature strip. It is a threedigit card security code meant for security purpose of debit and credit cards while making financial transactions. S suspicion, the CID Number is the 4 digit code located above the Account Number. Such as iCVV or a dynamic CVV. How to Get CVV Number, contactless card and chip cards may electronically generate their own code. Which is more likely to arouse the cardholderapos. And Visa credit and debit cards have a threedigit card security code. American Express also sometimes refers to a" New North American MasterCard and Visa cards feature the code in a separate panel to the right of the signature strip. MasterCard, while determining CVV, mastercard and Discover Cardholders, if a database of transactions is compromised. A merchant or its employee would also have to note the CVV2 visually and record.