Infrared touchscreens

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How does the infrared touchscreen work?
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 beam is interrupted, the absence of the signal at the collector is detected and converted to an X/Y touch coordinate.


Features of different touchscreen types


  Infrared Resistive Capacitive Accoustic wave
transparancy ***** ** *** ***
vandal proof ***** ** *** *****
scratch proof ***** ** *** *****
life expectancy **** ** *** ***
durability ***** ** ** *****
ambient light resistance **** **** **** ****
work with glove ***** ***** * ****
static proof ***** **** **** ****
working environment
(temperature, humidity)
***** ** *** ***
cleaning ***** ** **** ****
water proof (IP65) **** *** ** *
dust proof ***** **** *** **
drift free ***** *** ** ****