Question about whether QR code recognition and Spaital Anchor functions are supported in HoloLens 2 holographic remote rendering using Unity

Question

I am trying to use QR code recognition and Spaital Anchors functions for HoloLens 2 hologram remote rendering using Unity, but I have the following questions.

1. Does the function called hologram remote for play mode in the Unity editor support the same function as the result of building with Unity & Visual Studio?
   (This is to avoid trying to build functionality that isn't even available in the holographic remote for play mode.)
2. When I looked at the official documentation, the remote playback code was not properly explained. (API documentation)
   And after going through the detailed build process in Unity and Visual Studio, the explanation of testing the program seems to be lacking.
3. Can you let me know if you have a link?
4. Does HoloLens 2 hologram remote rendering support QR code recognition and Spaital Anchors? (QR codes are also a feature supported by Microsoft.)

Previously, when building and testing on a HoloLens device, QR code recognition and Spatial Anchors creation and recognition worked well.

I would like to change all these functions into a remote program that uses the resources of the PC.

Answer 1

Hello, Welcome to Microsoft Q&A,

For your questions:

• 1 Holographic Remoting for Play Mode in Unity supports most HoloLens features, but it essentially runs this application on a PC, there are still some limitations, you can refer to Holographic Remoting troubleshooting and limitations - Mixed Reality | Microsoft Learn and Holographic Remoting Version History - Mixed Reality | Microsoft Learn.
• 2&3 I'm not sure what you want. If you are talking about the Holographic Remoting Player application, then you can refer to Writing a Holographic Remoting remote app using the OpenXR API - Mixed Reality | Microsoft Learn and microsoft/MixedReality-HolographicRemoting-Samples: Code samples for using Microsoft's Holographic Remoting library. (github.com).
• 4 I think you are talking about Holographic Remoting for Play Mode in Unity and not Azure Remote Rendering, right? Holographic Remoting Player supports QR Code and Spatial Anchor, but there are still some limitations for Spatial Anchor, please check those documents I provided in the first answer.

Also, we usually use the Holographic Remoting for Play Mode in Unity to preview and debug the HoloLens application. If you want to use PC resources to power your application, please refer to Use PC resources to power your app with Holographic Remoting remote app - Mixed Reality | Microsoft Learn.

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