Using Payments Cards Online card verification number (CVN Detects fraud by comparing the verification number printed on the signature strip on the back of the card with the information on file with the cardholders issuing bank Electronic Commerc Prentice Hall 2006Electronic Commerce Prentice Hall © 2006 10 Using Payments Cards Online card verification number (CVN) Detects fraud by comparing the verification number printed on the signature strip on the back of the card with the information on file with the cardholder’s issuing bank