SELF-AUTHENTICATING CARD

摘要

A self-authenticating card includes a magnetic stripe storing a card authentication code and a network authentication code. The card also includes an authentication circuit that is operable to read the card authentication code and the network authentication code from the magnetic stripe using at least one sensor and authenticate the card using the card authentication code by comparing the card authentication code with an expected code stored in memory separate from the magnetic stripe. In response to authenticating the card using the card authentication code, the authentication circuit enables data communication with a card reader, provides the network authentication code to the card reader, generates a new network authentication code, and writes the new network authentication code to the magnetic stripe using at least one write head.