Tracker Pro is combined with Screen Doors 2000, and Magic Cursor to give you the complete computer access package for one low price !! 

Tracker Pro is a tracking device designed to move the cursor on a computer screen through movements of the head.  The Tracking Pro sits on top of a computer. Through a tiny reflective dot attached to the disabled person's forehead or glasses, the Tracker moves like a mouse when the head moves. Operates from the USB port of your computer or a compatible AAC device. Anything that can be done with a regular hand mouse can be done by using TrackPro.  Tracker Pro is dedicated assistive technology designed exclusively for people with limited use of their hands.

ScreenDoors 2000™  acts just like the real keyboard, typing directly into any application with a list of predicted words.  It actually guesses what you are typing to help speed entry.  Instead of pushing keys on a real keyboard, simply point and click on a picture of a keyboard on your computer screen.  .  It actually guesses what you are typing to help speed entry. 

MagicCursor 2000 or Magic Cursor OS X is the leading software dwell clicking solution, provides universal mouse button functions through alternative means, such as dwelling or gesturing.  MagicCursor 2000 is for people who can't, or don't want to click the mouse button. It performs all the mouse button functions automatically through software. All you need to be able to do is point: MagicCursor automatically takes care of the rest.