Hi Yong-il (@openable),
The licence agreement that prohibits the user of long term storage of data is indeed applied throughout the Tobii EyeX and REX trackers.
The Tobii EyeX Controller and its software experience is intended for interactive and gaming applications only.
If you want a solution for using eye tracking to study human behavior, please contact Tobii Pro.
If you want to develop software for analytical purposes, post processing or aggregation of eye tracking data across multiple users, please contact Tobii’s licensing team – [email protected]