A vehicular accessory system includes an attachment element adhered at an interior surface of a windshield of a vehicle and an accessory assembly attached to the attachment element. The accessory assembly includes circuitry disposed in the housing, the circuitry including a video camera. The video camera, when the accessory assembly is attached to the attachment element, has a field of view into the interior of the vehicle that encompasses the head of a potential driver of the vehicle. The video camera captures an image of the face of the potential driver and, responsive to image processing by image recognition software of the vehicular accessory system, the vehicular accessory system determines that the potential driver is an authorized driver who is authorized to operate the vehicle and, responsive to this determination, enables the ignition system to allow the motor of the vehicle be started.