# trackingLost

> Called when a tracked node stops reporting tracking information.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine.XR](/engine/6000.7/script-reference/unityengine/xr.md)
* **Assembly:** UnityEngine.XRModule

```csharp
public static event Action<XRNodeState> trackingLost
```

### Remarks

The event argument describes the node that has lost tracking.