The most popular touchscreen system due to it's simplicity and low cost, resistive touchscreens are typically used on screen sizes up to 17" diagonal. All variants of resistive touchscreens are force activated and can thus be activated by fingers, fingernails, stylii, gloved hands, and credit cards etc.
When the screen is touched the conductive coating on the coversheet is pressed against the coating on the glass making electrical contact. The voltages produced are the analogue representation of the position touched. An electronic controller converts these voltages into digital X and Y coordinates which are then transmitted to the host computer.
