iOS 18 Eye Tracking: How to Control iPhone Hands-Free

Apple's iOS 18 introduces built-in Eye Tracking, an accessibility feature that enables users to navigate and interact with their iPhone entirely hands-free using only eye movement. Designed primarily for individuals with physical motor limitations, this tool harnesses the device's front-facing camera and on-device machine learning to follow gaze direction without requiring extra accessories. By combining precise gaze targeting with timed selections known as Dwell Control, iOS 18 allows users to tap buttons, scroll pages, and launch apps across the entire operating system seamlessly.

The Underlying Technology

The Eye Tracking system operates using the iPhone's front-facing TrueDepth camera system and artificial intelligence. When enabled, the camera tracks pupil movements across the display in real time. All processing occurs locally via the Apple Neural Engine, meaning no video feed or tracking data is saved, uploaded, or transmitted to Apple or third parties, preserving complete user privacy.

To begin, users undergo a brief, five-point calibration process. The screen displays a small dot that moves across different zones of the display; the user simply follows the dot with their eyes. Once this initial mapping aligns the camera's input with the screen coordinates, the device is calibrated and ready to detect where the user is looking.

Eye Tracking converts eye focus into an interactive pointer. When a user looks at an app icon, menu option, or interactive element, a subtle outline appears around the target to confirm focus.

Selecting an item relies on Dwell Control:

  • Targeting: Looking directly at an element focuses the pointer on that specific target.
  • Activating: Keeping the gaze steady on the chosen element for a predetermined amount of time (the "dwell" duration) triggers a selection, functioning like a physical tap.
  • Customization: Users can adjust the dwell timing in settings to make selections faster or slower, avoiding accidental taps caused by casual glances.

System-Wide Navigation and Gestures

Eye Tracking goes beyond simple tapping by integrating with iOS's broader accessibility framework, most notably AssistiveTouch. Through an on-screen menu, users can perform complex multi-touch gestures and hardware interactions using only eye input:

  • Scrolling: Selecting direction arrows within the accessibility overlay lets users scroll through web pages, social feeds, and documents.
  • Home and App Switcher: Looking at the bottom edge or using the AssistiveTouch menu allows users to return to the Home Screen or switch between active applications.
  • Hardware Triggers: Functions that normally require physical buttons—such as adjusting the volume, locking the device, activating Siri, or opening the Control Center—can be triggered via gaze menus.

Enabling Eye Tracking in iOS 18

Eye Tracking requires an iPhone with an A12 Bionic chip or later (iPhone 12 series and newer recommended for optimal tracking performance). To turn on the feature:

  1. Open the Settings app.
  2. Select Accessibility.
  3. Scroll to the Physical and Motor section and tap Eye Tracking.
  4. Toggle the switch to On and follow the on-screen calibration dots.

Once configured, the feature works universally across native iOS menus and third-party apps, delivering fully autonomous, hands-free operation across the entire iPhone experience.