In modern control systems, the interface to humans is becoming increasingly important. The visual messages are realised with high-resolution, high-contrast and brilliant displays which often needs touch panels.
Touch systems have become firmly established for operation. While years ago they were resistive or light barrier-based systems, today the capacitive touch sensor is the measure of all things. The two essential technologies are the self and mutual-capacitive technology. These complement each other and so touch systems are available which deliver excellent results in most environments.
Touch panels are usually customised. This is because the touch panel forms a unit in combination with the protective glass.