Abstract: There is a need to develop a more sophisticated educational system of keyboard set ups for not only the disabled population from their worker's compensation injuries but for the entire continuum of keyboard, keypad and mouse users nationally and internationally for the prevention of computer related injuries. Due to the rising medical costs associated with upper extremity sprains and strains and more importantly, carpal tunnel syndrome, design companies are making ergonomic changes in the mouse, keyboard design. However, these changes are being made without regard for the user's dominance. Now a long term solution has been invented based on two simple tests by noted researchers. The dual system of keyboard/keypad, mouse or calculator input device selection based on the computer users human factors of dominance will have a decided impact on the reduction of computer related work force injuries or for other people with disabilities.