For our application we wanted to put the eye tracker above the screen, or in other words above the area that we want to track.
Will this work? I know in most promotional material it is shown below the screen or the tracking area.
asked 04 Sep '14, 13:00
In short, the eye tracker has to be at the bottom of the screen.
Eye lashes and eye lids tend to cover up the view of the pupil when the camera is placed above the screen, and greatly reduces tracking reliability.
See the slide show in QuickACCESS in the Live View to see examples of pupils and glints getting tracked or obscured, and for more information about placement recommendations.