Vehicle onboard safety systems against deception during driving-under-influence (DUI) test, using cheiloscopy sensor or bite mark sensor as biometrics have been invented. The systems have an engine interlock system, which controls the engine ignition based on the onboard DUI testing result. The systems also have a smart phone locker designed to take the smart phone away from the driver in order to avoid any driving distraction, while allowing connection to external network and resource through tethering.
