---
title: sceneUnderstanding
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/hassceneunderstanding/sceneunderstanding
---

# sceneUnderstanding

An entity component that detects and reacts to features of the physical environment.

## Declaration

```swift
@MainActor @preconcurrency var sceneUnderstanding: SceneUnderstandingComponent { get }
```