Also known as credit card verification numbers or by the abbreviation CVV.
This is a security code, a unique three or four digit number printed on your debit or credit card. This number is not embossed on the card and hence not printed on receipts. This makes it difficult for anyone other than the genuine cardholder to know it.
Some card issuers refer to this number as the Card Security Code, others as the Personal Security Code or Card Verification Value (CVV).
We need this code to be able to process your order
Most
cards, including many UK issued cards have a three-digit number
printed at the top of the signature strip on the reverse of the
card. This is the credit card verification number or CVV number.