We thank Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for their support – project number 572962334

We thank EyeSquare for their support.

We thank iMotions for their support.

We thank PupilLabs for their support.

We thank SR Research for their support.

We thank Tobii for their support.

We thank Viewpointsystem for their support.

We thank VPixx Vision Science Solutions for their support.

We thank Volksbank Ulm-Biberach eG for their support.