Basically EOG is dependent on eye movements potential.Apart from the above mentioned applications it can be used to control robotic arms or any machine by setting values to different potentials and also real time pattern recognition.Though its still under studies but it will soon be available in few years.

actually eye and its parameters of electrical activity, e.g. EOG, is a more sophisticated tool then it was considered before and is underestimated yet. So far EOG have been used to track eye position... and further eye-trackers (Tobii, SMI etc) are focused on this function, making from eye simulation of mouse. But eye is not only optical sensor but also the end effector of the human brain. The efferent process infers motion from the pursuit movements of the eyes following a stimulus and keeping it fixed within the fovea. Modern research favors outflow over inflow theory because when eye-ball is shifted with a finger there is no efference copy associated with the commands of the eye muscles and still the visual scene appears movable. A comprehensive functional model that supposes a reference signal that combines oculomotor information (efference copy) with optokinetic-vestibular information about head movement has been elaborated by Wertheim. EOG can bring much more information about brain activity than eye-trackers. This info can be used for development intelligent visualization methods and the imaging techniques for perception and manipulation of graphical items synchronous with brain activity (outflow).

Wertheim, A.H. (1987) Retinal and extraretinal information in movement perception: How to invert the Filehne illusion. Perception 16: 299-308.

Wertheim, A.H. (1994) Motion perception during self-motion: The direct versus inferential controversy revisited. Behav Brain Sci 17: 293-355.