Infrared technology uses infrared emitter-collector pairs to project an invisible grid of light a small distance over the surface of the screen. When a user touch the surface of screen, the infrared emitted from LED beam is broken ,the absence of the signal at the collector is detected and receiver transmits X-Y axis information to the PC port via touch controller.

Infrared technology is the survivor of harsh applications. It's the only technology that does not rely on an overlay or substrate to register a touch, so it's impossible to physically "wear out" the touch screen. It's an excellent choice for harsh industrial and outdoor kiosk applications.