4-wire resistive touch foil is a type of touch screen technology

The term “4-wire” refers to the number of wires used in the touch foil to detect touch inputs. Two wires are used to measure the X-axis position, and two wires are used to measure the Y-axis position. The touch foil is designed to be placed on top of a non-conductive surface, such as glass or plastic, and can be easily attached using a self-adhesive backing.

4-wire resistive touch foils are often used in applications where durability and reliability are critical, such as in industrial control systems or public kiosks. They are also used in various consumer electronic devices, such as handheld gaming devices, GPS units, and mobile phones.