# screenReaderStatusChanged

> Event invoked on the main thread when the user turns the screen reader on or off.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine.Accessibility](/engine/6000.3/script-reference/unityengine/accessibility.md)
* **Assembly:** UnityEngine.AccessibilityModule

```csharp
public static event Action<bool> screenReaderStatusChanged
```

### Remarks

Subscribe to this event to activate your [AccessibilityHierarchy](/engine/6000.3/script-reference/unityengine/accessibility/accessibilityhierarchy.md) (see [AssistiveSupport.activeHierarchy](/engine/6000.3/script-reference/unityengine/accessibility/assistivesupport/activehierarchy.md)) and if you need to customize your application's interface for screen reader users.

You can also use [AssistiveSupport.isScreenReaderEnabled](/engine/6000.3/script-reference/unityengine/accessibility/assistivesupport/isscreenreaderenabled.md) to determine whether the screen reader is turned on or off.