To improve facility of an automobile in connection with a keyless entry system.

An individual identification system is combined with a keyless entry system of an automobile, so as to construct a keyless entry system with high security. Additionally, because one user can be specified from a plurality of users by individual identification, setting is controlled to change as soon as a door lock is released, in order to obtain a setting condition of boarding environment registered per user. Thereby, a function for automatically changing the boarding environment according to the user is added to the keyless entry system combined with individual identification.