Which one of the following is not a pointing device ?

A pointing device is an input interface that allows a user to control the movement of a cursor or pointer on a computer screen to select, click, or manipulate digital objects. Common examples include the mouse, trackball, touchpad, joystick, light pen, and touchscreen.

• Touchscreen: Enables users to interact with the display by touching it with a finger or stylus.
• Trackball: Uses a rotating ball to move the cursor.
• Light pen: A light-sensitive wand used to select or draw on a monitor.
• Scanner: While a scanner is an input device, it is used to digitize physical documents or images into electronic data. It does not function as a pointer to control a graphical user interface (GUI), and therefore is not a pointing device.