# Device

> XRInputSubsystem tracks all InputDevice s in reference to the first known location of a specific InputDevice when set to TrackingOriginModeFlags.Device.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.XR](/engine/6000.5/script-reference/unityengine/xr.md)
* **Assembly:** UnityEngine.XRModule

```csharp
Device = 1
```

### Remarks

For mobile AR applications, the [InputDevice](/engine/6000.5/script-reference/unityengine/xr/inputdevice.md) is the mobile device the application is running on. For head-mounted device applications, the head-mounted device acts as the root.