Patent attributes
Authentication systems and methods using orientation sensor-enabled payment cards are disclosed herein where a server receives an authorization request from a web server or an electronic terminal. The server then transmits an instruction to the orientation sensor to determine whether the payment card has an orientation that is consistent with a predetermined orientation. When the payment card has an orientation consistent with the predetermined orientation, the server executes a first authentication protocol. However, if the payment card has an orientation that is not consistent with the predetermined orientation, the server executes a second authentication protocol that is more restrictive than the first authentication protocol.