Why not quote Wikipedia's article on "Touch Screen": "A touchscreen is an electronic visual display that can detect the presence and location of a touch within

Why not quote Wikipedia's article on "Touch Screen": "A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus." Oh wait, because it doesn't suit your purposes either.