When it comes to monitoring the world around us, engineers rely on sensors to measure physical quantities such as humidity and convert them into signals for computers to process. The team specifying the sensors will need to consider the measurement accuracy and range as well as other aspects, such as robustness and protection against the intrusion of dust and liquids. As sensor performance increases and its robustness for the target environment climbs, the cost for the sensor inevitably grows too. This causes problems when rolling out sensors for use since high purchase costs can hold back their wider deployment.