Alternatively known as a pointing stick, style pointer, or nub, TrackPoint is a mouse solution used with portable computers that was first introduced by IBM on their ThinkPad in 1992. It is a small, isometric joystick that resembles a pencil's eraser head, located between the "G," "H," and "B" keys on the keyboard. This technology enables the user to keep their hands on the keyboard and still be able to control the mouse. The left and right buttons for this mouse are commonly located under the spacebar. The picture shows an example of the TrackPoint.