Touch screen technology has the potential to replace most functions of the mouse and keyboard. In order for the computer to interpret the touch location, you must use three key components which make up a touch system: the touchscreen, the controller, and the driver software.<br><br>The touch screen interface is being used in a wide variety of applications to improve human-computer interaction. Touch is the easiest to learn and use of any available interface. It is pressure sensitive so it responds to any input device, including finger, gloved hand, or pen stylus. Businesses both large and small are using touch technology to create new products, reach new markets, increase productivity, and ease the flow of information.