Are there any special design guidelines for big touch screens (30-50 inch)?

1. What are the three major approaches used to design a touch sensitive screen?
2. How big can a touchscreen be?

What are the three major approaches used to design a touch sensitive screen?

There are three components that work together to create the magic of touch screen capability: the touch sensor, the controller, and the software. The touch sensor can be one of three types: resistive, surface acoustic wave, or capacitive. Resistive and capacitive are the most common and are quite ingenious.

How big can a touchscreen be?

Touchscreen displays typically come in screen diameters of 55”, 65”, 75” and 85”.