A method for authorizing a driver to activate at least one system of a vehicle, includes a preliminary phase that includes an initialization step, an enrollment step scanning enrollment biometric data of the driver, an access step for the driver to enter the vehicle, and a storage step registering enrollment biometric data in memory. The method also includes a subsequent phase that includes an authentication step scanning authentication biometric data of the driver and comparing said authentication biometric data with the enrollment biometric data in the memory, then an activation step wherein, if the authentication biometric data match with the enrollment biometric data, in authorizing the driver to activate the at least one system of the vehicle, or a refusal step wherein, if the authentication biometric data does not match with the enrollment biometric data, in forbidding the driver to activate the at least one system of the vehicle.