Does iOS 18 Eye Tracking Need Special Hardware?

Apple's iOS 18 introduces built-in Eye Tracking designed for users with physical disabilities, allowing full navigation of an iPhone or iPad using only eye movements. This feature does not require any external sensors, specialized glasses, or third-party hardware accessories to function or calibrate. Instead, it relies entirely on the device's built-in front-facing camera and on-device artificial intelligence to track gaze and execute commands.

How the Calibration Process Works

Calibration for iOS 18 Eye Tracking is completely digital and completed on-screen. To calibrate the feature, the user follows a simple setup process:

  1. Navigate to Settings > Accessibility > Eye Tracking.
  2. Toggle the Eye Tracking switch on.
  3. Keep the device positioned on a stable surface approximately 1.5 feet (about 45 cm) away from the face.
  4. Follow a moving dot across different points on the display with your eyes as it completes a calibration sequence.

The calibration takes only a few seconds. Once finished, a smoothing algorithm maps gaze points directly to display actions without needing external calibration rigs or wearable sensors.

Built-In Hardware and Technology

The system is powered through standard Apple components rather than dedicated peripheral sensors:

  • Front-Facing Camera: The standard FaceTime front camera captures eye orientation and subtle gaze shifts.
  • Apple Neural Engine: The on-device Neural Engine and machine learning models process the visual feed in real time, interpreting where the user is looking.
  • Dwell Control: Users can interact with interface elements by holding their gaze on a specific button or app (known as "Dwell"), triggering an action without physical taps.

Compatibility Requirements

Because the feature relies on the Neural Engine for processing, Eye Tracking requires a compatible Apple device running iOS 18 or iPadOS 18:

  • iPhone: iPhone 12 series or later (as well as iPhone SE 3rd generation).
  • iPad: iPad Pro (11-inch 3rd gen or later, 12.9-inch 5th gen or later), iPad Air (3rd gen or later), iPad mini (6th gen), or standard iPad (10th gen).

All data used for Eye Tracking calibration and operation remains securely on the device, ensuring privacy while eliminating the expense and complexity of external assistive hardware.