Verified by Visa

Verified by Visa is a Visa payment authentication system that validates a cardholder's ownership of an account in real-time during an online payment transaction. When the cardholder clicks "Buy" at the checkout page of a participating merchant website, a Verified by Visa screen automatically appears in the cardholder's browser. The cardholder enters a password that allows the card issuer to verify his or her identity.

Unsigned Card

Unsigned card is a seemingly valid payment card that has not been signed by the legitimate cardholder. Merchants cannot accept an unsigned card until the cardholder has signed it. As an additional fraud prevention measure in a card-present environment, the signature should be checked against a valid government identification, such as a driver's license or a passport.

Transaction

Transaction is the act between a cardholder and merchant that results in the sale of goods or services.