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A pointing stick is an isometric miniature joystick that is primarily used in laptops as a cursor pointing device.
The pointing stick moves and manipulates the computer cursor like a joystick. Its height is designed to be slightly above the keys. If a laptop does not have the proper space for a touchpad, a pointing stick is a useful alternative. To work as designed, the pointing stick’s sensitivity grading must be calibrated to sense movements and taps meant for its use.
Pointing sticks are commonly found on ThinkPad laptops.
In 1990, IBM began researching alternatives to the mouse. Considered desirable for typing accuracy, the pointing stick mechanism can cause unwanted results or movements for novice typists. The pointing stick also requires calibration and periodic recalibration to fine-tune settings.
A pointing stick is similar to a joystick. The joystick must be grasped, whereas the pointing stick can be touched, as it is embedded near the middle of the keyboard. A pointing stick is considered more efficient than a mouse, but a mouse is a more efficient pointer than the pointing stick.
IBM created the TrackPoint, which has varying degrees of touch sensitivity, as well as other operating mechanisms and features. Several hardware manufacturers have produced their own versions of the pointing stick as well, and most perform duties similar to the original. However, pointing sticks cannot be used on command or prompt interfaces.