How to Set Up and Use Eye Tracking to Control Your iPhone with Your Eyes in iOS 18

Modern mobile accessibility took a significant leap forward with the release of iOS 18. While voice control, assistive switches, and back-tap gestures have long empowered users with motor differences, Apple introduced a breakthrough native capability: Eye Tracking. Built directly into iOS, this feature transforms the front-facing TrueDepth camera into an optical navigation sensor, allowing you to control your iPhone entirely with your gaze.

Eye Tracking functions without third-party eye-gaze hardware or bulky diagnostic sensors. By combining on-device machine learning with neural engine processing, iOS 18 maps pupil movement in real time while keeping biometric data private and securely contained on your device.

How Eye Tracking Works on iPhone

Eye Tracking tracks corneal reflections and pupil orientation relative to the screen coordinates. When enabled, a responsive smoothing pointer appears on your display, tracking wherever you look. To interact with interface elements—such as tapping an application icon, expanding a Control Centre slider, or selecting a text field—iOS employs Dwell Control.

When your gaze rests steadily on a specific button or interactive control for a predetermined duration (by default, approximately 1.5 seconds), the system triggers a virtual tap or primary action. This mechanism provides full navigation capabilities across standard iOS interfaces and third-party apps alike.

Hardware Prerequisites and Preparation

Before configuring Eye Tracking, ensure your environment is set up for optimal optical tracking:

• Compatible Hardware: Eye Tracking requires an iPhone with a TrueDepth camera system running iOS 18 or later (iPhone 12 series and newer).
• Stable Placement: Position your iPhone on a stable surface, desk mount, or stand approximately 30 to 45 cm (12 to 18 inches) from your face. Handheld use is supported, but steady positioning delivers the highest tracking accuracy.
• Lighting Considerations: Ensure your face is evenly illuminated. Avoid sitting directly in front of bright background light sources (such as an unshaded window or direct lamp) that cast heavy shadows across your eyes.

Configuring and Calibrating Eye Tracking

Setting up Eye Tracking involves a quick, guided five-point calibration process:

1. Open the Settings app on your iPhone.
2. Scroll down and tap Accessibility.
3. In the Physical and Motor section, tap Eye Tracking.
4. Toggle the Eye Tracking switch to On.
5. A calibration assistant appears on the screen. Follow the moving dot with your eyes across the five calibration points on your display. Keep your head relatively still and track the dot naturally until calibration finishes.
6. Once complete, a circular pointer appears on your screen, indicating that optical tracking is active.

Customising Dwell Time and Pointer Behaviour

To ensure Eye Tracking fits your natural reading speed and visual comfort, fine-tune the dwell parameters:

1. In Settings > Accessibility > Touch > AssistiveTouch, locate Dwell Control.
2. Adjust the Dwell Time slider. If items trigger too quickly while you are reading content, increase the duration to 2.0 or 2.5 seconds. If you want faster responsiveness, decrease it to 1.0 second.
3. Enable Dwell Pause in your AssistiveTouch menu so you can temporarily freeze gaze tracking when watching videos or reading long articles.
4. Turn on Snap to Item in Eye Tracking settings. This causes the pointer to magnetically attach to nearby buttons and icons, significantly reducing fatigue when targeting smaller controls.

Quick Activation via Accessibility Shortcut

Because you likely will not want Eye Tracking active during every single phone interaction, assign it to a physical shortcut for immediate toggling:

1. Go to Settings > Accessibility > Accessibility Shortcut.
2. Check Eye Tracking.
3. Now, triple-click the iPhone Side Button (or tap the Action button on supported models) to turn Eye Tracking on or off instantly.

Troubleshooting Calibration Drift

If you notice the pointer drifting away from where your eyes are looking, recalibrate the sensor:

• Return to Settings > Accessibility > Eye Tracking and tap Recalibrate.
• Ensure your eyeglasses are clean, as smudges or strong reflective glare can temporarily interfere with the TrueDepth infrared dots.
• Check that the front camera notch or Dynamic Island area is free from fingerprint oils and dust.