A German Patent filing from Apple relates to Eye Tracking technology for future HMDs, Contact Lenses, a Vehicle's HUD system+
Earlier today Patently Apple discovered a patent application from Apple from the German Patent Office that was published on January 05, 2023. The patent application relates to gaze tracking technology that could be used in Apple's future mixed reality headset, projection systems in a vehicle's HUD system or even with contact lenses.
Source: patentlyapple.com