Projected Capacitive Touch (PCAP): Projected capacitive touch technology is distinguished by its utilisation of an etched electrode pattern on the conductive layer. This electrode pattern comprises both horizontally and vertically etched electrodes, effectively forming a grid-like structure. While various touchscreen technologies employ electrodes to register touch inputs, projected capacitive touchscreens are unique in their grid formation, thanks to the integration of both horizontal and vertical electrodes.

Infrared Touch: The functionality of an infrared touchscreen involves the identification of interruptions in the infrared beams emitted by LEDs integrated into the frame surrounding the touchscreen overlay.

These IR LEDs are organised into two sets, with one generating horizontal beams and the other generating vertical beams, forming a grid of light beams that blankets the overlay's surface. Simultaneously, two rows of light-sensitive receptors are positioned on the opposite side of the LEDs.

When a finger or object makes contact with the surface, it obstructs the path of these light beams. Photoreceptors aligned both horizontally and vertically detect this interruption caused by the object. These photoreceptors then pinpoint the precise x and y coordinates of the touch and transmit this information to the processor, and the appropriate response or action is displayed.