I also tried to use gazeAware but unity says ” it seems a Gaze Aware component has been attached to a UI element, which is not supported. GazeFOcus can only be detected on a 3D and 2D GameObjects whith a collider”.
However, I created a collider around my UI Button .
It seems like there is an ActivatableGUI demo that explain how to do but i cannot find it :/
Thank you