---
title: HIDUsage.EyeAndHeadTrackersUsage.trackingData
framework: corehid
role: symbol
role_heading: Case
path: corehid/hidusage/eyeandheadtrackersusage/trackingdata
---

# HIDUsage.EyeAndHeadTrackersUsage.trackingData

## Declaration

```swift
case trackingData
```