Datron Messtechnik has been involved with non‐contact sensing for some 20 years ever since the technology was initially devised to measure the speed of molten steel. The technology was then seen by the motor industry for which it has since been developed together with specification requirements from companies like Mercedes Benz, BMW, Jaguar, Austin Rover and has now resulted in a well‐established market. The vehicle manufacturers use the sensor technology to measure true vehicle speed, distance, time, acceleration, height, slip, etc.