Hi! Do you have any of these Tobii devices?
Tobii Eye Tracker 4C
or Tobii EyeX
or any laptop/monitor with integrated Tobii Eye Tracker?
https://gaming.tobii.com/products/peripherals/
Does Tobii work in Windows? (Gaze trace etc). Did you calibrate the tracker?
Tobii Unity SDK requires an eye tracking hardware, it doesn’t work with a normal webcam.