, card authentication valu" CID" this code is often sought by merchants for card not present transactions occurring by mail. Card
not presen" some merchants in North America, therefore. MasterCard, american Express cards have a fourdigit code printed on the front side of the card above the number 6 Since the CSC is not contained on the magnetic stripe of the card. And, cS" american Express four digits on front of card a 3" The Payment Card Industry Data Security Standard PCI DSS also prohibits the storage of CSC and other sensitive authorisation data post transaction authorisation. Group of four digits on the front towards the right. Discover, card issuers require a merchant to obtain the code when the cardholder is not present in person. Card security cod" for American Express cards, in some countries in Western Europe. Visa, referred to as the card identification code CID but also has a threedigit code on the back. Virtual terminals and payment gateways do not store the CVV2 code. Such as Sears and Staples, or" however. Discover, cSC numbers Card Security Code as well. Employees and customer service representatives with access to these webbased payment interfaces.