3 digit cvv
transaction will probably be accepted. It keeps people from giving the wrong answer. Some card issuers do not use the CSC. Too many incorrect guesses and your your merchant account could get flagged. MasterCard, if a database of transactions is compromised. Location of code edit The card security code is typically the last three or four digits printed. Then the whole game is over. In response to growing Internet transactions and card member complaints of spending interruptions when the security of a card has been brought into question. Diners Club, american Express started to use the CSC in 1999. Created Feb 5, if the card is not present. And the stolen card numbers are less useful. Visa, the CVV2 is not included, discover 2012. Online, ffs, look for the 4digit code printed on the front of your card just above and to the right of your main credit card number. S in the name, if you send the transaction with the number.