> For the complete documentation index, see [llms.txt](https://xreal.gitbook.io/nrsdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xreal.gitbook.io/nrsdk/development/plane-detection-tutorial/detect-planes-in-the-real-world.md).
# Detect planes in the real world
Now that a basic scene has been set up, you can start on developing the game. In this step, you will detect planes and draw them to the scene.
### Add an `PlaneDetector` component
An `PlaneDetector` detects and creates, updates, and removes game objects when the device's understanding of the environment changes.
1.Using the Hierarchy pane, create an empty `GameObject`.
2\. Rename it to `PlaneDetector`. This component will display planes until one is selected by the player.
3\. Select the new game object. Within the Inspector pane, click **Add Component** to add a `PlaneDetector`
4\. Configure the `PlaneDetector`by setting the `Detected Plane Prefab` field:
* Click the button next to `None` to bring up the **Select GameObject** window.
* Select the **Assets** tab and search for **WoodenPlaneVisualizer**.
This prefab from the starter package provides a wooden floor texture that will be used as the plane decoration.
### Run the app
1.Build and deploy your app as described in **Step 7** and **8** in [Getting Started with NRSDK](/nrsdk/nrsdk-fundamentals/quickstart-for-android.md) to test your changes
2\. Point your glasses at a horizontal real-world surface and move your glasses around to improve NRSDK's understanding of the world.
3\. When NRSDK has detected a plane, you should see a wood texture cover real-world surfaces. The `Plane Detector` instantiates the given `Detected Plane Prefab` for each detected plane.
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