Capacitive buttons are becoming popular in everyday applications; induction cookers, microwaves, thermostats, and access control systems, to name a few. Due to the fact that they are less prone to failure, easy to clean and maintain, they are also beginning to gain traction in industrial gauges, which are common in dirty environments. Proximity sensing is used in sanitary applications as well as portable electronics such as headphones to detect whether a gadget is in use, in order to conserve battery life.