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How do you implement spatial anchors in a cross-platform XR app?

Asked on Dec 07, 2025

Answer

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Implementing spatial anchors in a cross-platform XR app involves using frameworks like AR Foundation in Unity or OpenXR in Unreal Engine to manage persistent world-locked points. These anchors allow virtual objects to maintain their position relative to the real world across different sessions and devices.
  1. Choose a cross-platform XR framework like Unity's AR Foundation or Unreal's OpenXR plugin to support spatial anchors.
  2. Implement anchor creation and management using the framework's API, ensuring compatibility with both ARKit and ARCore.
  3. Persist anchor data using cloud services or local storage to enable cross-session and cross-device consistency.
Additional Comment:
  • Ensure that the app requests necessary permissions for camera and location access.
  • Test anchor stability and accuracy across different environments and lighting conditions.
  • Consider using cloud anchor services for enhanced cross-device synchronization.
✅ Answered with VR/AR Development best practices.
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