Control is based on sensor information from sensors. Optical fibers are widely used as components of optical chemical sensors and optical biosensors. Various configurations of optical flow sensors exist. Examples of sensors include smoke detectors, motion sensors, and contact sensors. They consist of sensors including perimeter sensors, motion sensors, contact sensors, and glass break detectors. They are equipped with cameras and other sensors. Thermistor elements are the most sensitive temperature sensors available. IMEC works on developing advanced image sensors and vision systems. Some systems can be configured to permit deactivation of individual sensors or groups. Autonomous vehicles are equipped with different sorts of sensors and radars. The active stabilizer system relies on vehicle body sensors and electric motors. Externally based systems use local, dedicated sensors. There are a variety of other chemical sensors for measuring glucose. Simple nets are less effective in defeating radar and thermal sensors. They have potential uses in diode lasers, amplifiers, and biological sensors.