How to Enable and Use Eye Tracking on iPhone in iOS 18 to Control Apps Hands-Free

For individuals with severe physical motor impairments, cerebral palsy, spinal injuries, or temporary upper-limb mobility limitations, operating a touchscreen smartphone using physical fingers is difficult or impossible. While external specialized assistive eye-gaze tracking hardware exists, these solutions historically cost thousands of pounds, required bulky dedicated mounting rigs, and were incompatible with mobile operating systems.

In iOS 18, Apple integrated native on-device Eye Tracking directly into the iPhone. Powered by the front-facing TrueDepth camera system and local machine learning models, Eye Tracking allows users to navigate the entire iOS interface, open apps, swipe through pages, and trigger buttons using only their eyes—completely free of external hardware or sensor attachments.

Hardware and Privacy Requirements

Eye Tracking is built into iOS 18 and iPadOS 18 on devices equipped with the TrueDepth camera system:

• iPhone 12 series, iPhone 13 series, iPhone 14 series, iPhone 15 series, iPhone 16 series, and compatible iPad Pro/Air models.
• On-Device Privacy: All eye movement processing and camera frames are analyzed entirely on-device by the Apple Neural Engine; raw video feeds and gaze coordinates are never stored, saved, or uploaded to Apple servers.

Enabling and Calibrating Eye Tracking on iPhone

To activate Eye Tracking and complete the initial gaze calibration routine:

1. Place your iPhone on a stable, flat surface or mount it on a stand approximately 30 to 45 cm (12 to 18 inches) from your face.
2. Open Settings and tap Accessibility.
3. Under the Physical and Motor heading, tap Eye Tracking.
4. Toggle the Eye Tracking switch to the On position.

Completing the Dot Calibration Follow Routine

Immediately upon toggling the feature on, iOS launches an automated calibration sequence:

1. A series of animated dot points appear sequentially across different coordinates of the display.
2. Keep your head still and follow each dot with your eyes as it traverses the screen.
3. Once all target coordinates are sampled (typically taking 15 to 20 seconds), calibration concludes automatically.

A smooth circular gaze pointer now follows your eyes as you look around the display.

Configuring Dwell Control and Interactive Actions

To interact with screen elements (such as tapping an app icon or opening a message):

1. Return to Settings > Accessibility > Eye Tracking.
2. Enable Dwell Control: Looking at an on-screen button or app icon for a defined duration (the dwell time) automatically executes a tap.
3. Tap Dwell Time to customize the trigger speed:
   • Defaults to 1.5 seconds.
   • Adjustable between 0.5 seconds (for experienced users) and 3.0 seconds (to prevent accidental activations while reading).
4. Enable Dwell Action: Customize whether dwelling triggers a simple tap, opens the AssistiveTouch action menu, or performs a swipe gesture.

Navigating iOS Hands-Free

With Eye Tracking active, navigating apps follows an intuitive gaze pattern:

• Opening an Application: Gaze at the desired app icon on your Home screen until the circular dwell indicator fills completely.
• Scrolling Lists: Look towards the top or bottom of the screen to activate automatic page scrolling buttons via AssistiveTouch.
• Recalibrating: If tracking accuracy drifts due to changes in room lighting or posture, triple-click the Side button or access Control Centre to trigger a quick re-calibration.

Apple’s native Eye Tracking in iOS 18 empowers users with physical motor limitations to navigate, communicate, and control their digital lives with complete independence.