TrackerPro is a computer input device that takes the place of a mouse for people with little or no hand movement. Simply plug it in and it works just like a mouse no additional software required. Anything that can be done with a regular hand mouse can be done by using TrackerPro in conjunction with one of many clicking solutions. TrackerPro tracks a small dot that you can place on your forehead- glasses or the rim of a hat. Hi-Res CCD Camera: Ultra smooth- pixel perfect tracking. You can use TrackerPro for drawing- drafting- or any other application requiring fine cursor control. 45 Degree Field of View. Horizontal or Vertical Mounting: You can use the same TrackerPro on any type of computer desktop or laptop. The swivel camera ball makes it very easy for pointing the camera. USB connection. Plug & Play: No software is required. Sunlight Compatible. Intellipoint Compatible. Front LED Indicators: Includes one sheet of 50 reflective dots.