Unfortunately the licence agreement supplied with the Tobii C4 Eye Tracker explicitly forbids the raw collection of gaze data for storage or research purposes.
If you want a solution for using eye tracking to study human behavior, please contact Tobii Pro. http://www.tobiipro.com/
If you want to develop software for analytical purposes, post processing or aggregation of eye tracking data across multiple users, please contact SDK Licensing team. [email protected]
Apologies for any inconvenience.