Contactless card personal identification system

A two-factor PIN-based authentication system and method uses a cryptogram provided by a contactless card associated with the customer in association with a PIN stored by the contactless card to authenticate the customer. In some embodiments, cryptogram authentication may be preconditioned on the contactless card determining a PIN match. In other embodiments, the cryptogram may be formed at least in part using the personal identification number (PIN) stored on the contactless card encrypted using a dynamic key stored by the contactless card and uniquely associated with the customer. Authentication can be achieved by comparing the cryptogram formed using the PIN with a generated expected cryptogram, an expected PIN, and an expected dynamic key. (Automatic translation with Google Translate, without legal value)