The patent application identified as an “Eye Tracking System” describes one method of monitoring how the user looks at a display very close to their eyes, namely in VR and AR headsets. While this technology does exist in other devices, these systems typically rely on a camera and an IR emitter pointing at the user’s face or using a mirror to reflect at a 90-degree angle, but the extra space required in front of the user to function properly isn’t available in the compact and component-filled headsets.
