Pointing device

Mouse icon

A pointing device is an input interface (specifically a human interface device) that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. CAD systems and graphical user interfaces (GUI) allow the user to control and provide data to the computer using physical gestures by moving a hand-held mouse or similar device across the surface of the physical desktop and activating switches on the mouse. Movements of the pointing device are echoed on the screen by movements of the pointer (or cursor) and other visual changes. Common gestures are point and click and drag and drop.

Source: Wikipedia

Identification
Types

Chin-operated

Eye-operated

Finger-operated

Footmouse

Head-operated

Joystick

Mouse cursor

Mouth-operated

Virtual mouse

Switch mouse

Software utilities