This will be no problem at all in the sdk. Hell I saw someone do this as some point on the mac using the macbook camera popping windows to the front based on eye-dwell... I think they started with cursor control.. essentially eye-mouse.

Oh wait some version of that is built into accessibility on mac already (eye tracking mouse): https://support.apple.com/lv-lv/guide/mac-help/mchl437b47b0/...