AUTHENTICATION AND REGISTRATION SYSTEM

An authentication and registration system is provided which can reduce a burden at the time of authentication and registration while ensuring security when a single apparatus is used to perform authentication and registration of identification information on another apparatus. In an authentication and registration system (1), an authentication request signal is transmitted from a mobile terminal (3) to a registration server (2). When two sets of identification information VIN and IMSI received before and after the authentication request signal match each other, the registration server (2) transmits an authentication code signal to an on-board controller (4) so that an authentication code is displayed on a DA apparatus (23). Thereafter, when an authentication code in an authentication code acknowledgement signal transmitted from the mobile terminal (3) matches the authentication code in the authentication code signal, the registration server (2) determines that authentication of the identification information succeeds.