The nice thing is that once you’ve got it working with a small screen it is easily scaled up. In fact, the 23″ touchscreen used on this Android hack is just another 4-wire resistive device.

Selecting touch screen sensors requires an analysis of performance specifications and application requirements. In general, resistive touch screens provide only 75 percent clarity. They are available ...

Resistive Resistive touch technology consists of a glass or acrylic panel that is coated with electrically conductive and resistive layers. The thin layers are separated by invisible separator dots.