Ok, I see. Then it sounds reasonable to look at the MinimalGazeDataStream code sample, but instead of just showing the X and Y coordinates in the console you can move around some sort of semi-transparent window based on these coordinates. You probably would want to do some sort of filtering on the signal to make it smoother. Also, beware of the “mouse chase” effect: When you have a visual element moving close to where you look, the eye’s natural behavior is to follow the moving target. If you make your “focus” indicator large and discrete, it should be ok.