---
title: SceneEvents.TrackingStateUpdate
framework: realitykit
role: symbol
role_heading: Structure
path: realitykit/sceneevents/trackingstateupdate
---

# SceneEvents.TrackingStateUpdate

An event type that signals a change of device tracking state.

## Declaration

```swift
struct TrackingStateUpdate
```

## Topics

### Instance Properties

- [current](realitykit/sceneevents/trackingstateupdate/current.md)
- [previous](realitykit/sceneevents/trackingstateupdate/previous.md)

### Enumerations

- [SceneEvents.TrackingStateUpdate.State](realitykit/sceneevents/trackingstateupdate/state.md)

## Relationships

### Conforms To

- [Event](realitykit/event.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)