# primaryButton

> The primary face button being pressed on a device, or sole button if only one is available.

## Definition

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

```csharp
[NoAutoStaticsCleanup]
public static InputFeatureUsage<bool> primaryButton
```