Using Payments Cards Online virtual credit card An e-payment system in which a credit card issuer gives a special transaction number that can be used online in place of regular credit card numbers Electronic Commerc Prentice Hall 2006Electronic Commerce Prentice Hall © 2006 12 Using Payments Cards Online virtual credit card An e-payment system in which a credit card issuer gives a special transaction number that can be used online in place of regular credit card numbers