Isao Nakanishi of Tottori University’s College of Engineering has drawn attention to the fact that conventional biometric systems only identify users once. This means that if an impostor replaces an authenticated user in a stolen car, the system would not have any way to confirm that the person driving the vehicle is the true owner. Technically, a kidnapper could force the owner to pass authentication and then throw him out of the vehicle or tie him up in the trunk.
However, continuously measuring the driver’s brainwaves through sensors placed in the seatbelt would be easy to implement. This would be an effective means of authentication that could not be faked by an imposter. If the brainwaves measured do not match those of the driver, the car would be safely immobilized and the thief would have no way to use the vehicle.