Pointing stick
The
pointing stick (trademarked by
IBM as the
TrackPoint) is a
pointing device for laptops invented by research scientist Ted Selker and equips their line of
ThinkPad laptops. The pointing stick takes the form of a red-tipped stick embedded in the
QWERTY keyboard between the 'G', 'H' and 'B' keys, and the mouse buttons are placed just below the keyboard.
The pointing stick operates by sensing applied force, typically by measuring the resistance of a material. The velocity of the cursor is then proportional to the applied force.
See also: pointing device, touchpad
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