Credit Cards · Tools · Glossary · T-terms · Two-factor authentication

Credit Card Glossary: Terms and Definitions

Confused by credit card terms?'s glossary of credit card definitions will help. From account holder to Regulation Z, we have defined the most-common and most-confusing credit card terms.

#  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Two-factor authentication

Two-factor authentication is a form of identification often used in making sure a credit card transaction is authorized. Typically one factor may be a physical object (such as having a credit card in your possession), another may be a piece of knowlege (such as a PIN number or security code number), and yet another may be a unique characteristic (such as a fingerprint, an iris pattern or the ability to retype a sequence of numbers and letters). The presence of two factors allows a two-factor authentication.