Hi @sappelhoff, you should be able to find a number of previously created scripts produced by others users at the Tobii App Market
https://www.tobiipro.com/about/partners-resellers/app-market/
These scripts were generally tailored for use with the Tobii Pro SDK, but I believe the methodology (and perhaps code) should still work with the Tobii Tech range of SDKs, namely the Tobii Stream Engine API and Interaction Library API.
Please let us know if we can provide any further information. Best Wishes.