BIGtrack is the latest addition to the AbleNet line of computer access tools. BIGtrack has a 3-inch trackball, which makes it the largest trackball mouse available. The large trackball requires less fine motor control than a standard trackball and it is ruggedly built. BIGtrack has a left and a right mouse click button located behind the trackball to avoid unwanted mouse clicks. BIGtrack also allows for 2nd mouse connection; both BIGtrack and a second mouse can be connected allowing simultaneous participation.