To clarify: Our consumer eye trackers are not meant to be used for research. Neither are they meant to replace the mouse, since eye tracking can never be pixel perfect (partly because of biological limitations with the eye). Giving standard numbers for precision and accuracy encourages people to focus on pointing precision and comparing the eye tracker to a mouse pointer instead of embracing eye tracking for its own merits and creating a great user experience where eye tracking is one of a set of input devices used in combination. For example, in a game, the eye tracker can be used to control the camera rotation separately from the game character’s rotation. So, you can have your character move in one direction and at the same time be free to look out for enemies to the left and right.