Hololens | Website made for Microsoft Hololens as a school project

I'm new in hololens 2 developing and trying to use Holographic Remoting.

Unity 2019 LTS MRTK 2.5.3 Unreal 4.26 Hololens 2 Win 10 VS 2019

1. In Unity : I follow a popular tutorial,

On HoloLens, go to the Microsoft Store and install the Holographic Remoting Player application. On HoloLens, start the Holographic Remoting Player application. In Unity, click the "Windows" menu and select "XR->Holographic Emulation". Set the simulation mode to the remote device. For remote computers, please enter the IP address of HOLOLENS. Click "Connect". You should see the connection status change to "Connected", and you should see the screen appear blank in HoloLens. Click the "Play" button to start the play mode and experience the application on HoloLens.

What I met: Setting in Unity Setting in Unity

When I start to "Connect", Error there: Disconnected with error TransportConnectionFailed UnityEditor.EditorApplication:Internal_CallUpdateFunctions()

1. In Unreal I follow: https://docs.unrealengine.com/zh-CN/SharingAndReleasing/XRDevelopment/AR/HoloLens/QuickStartStreaming/index.html https://docs.microsoft.com/zh-cn/windows/mixed-reality/develop/unreal/tutorials/unreal-uxt-ch6

Setting in Unreal Setting in Unreal Similiar error: LogTemp: Editor connecting to remote HoloLens2: 192.168.19.57 LogWmrHmd: WMRInterop: ConnectToRemoteHoloLens trying to connect to HoloLens2 192.168.19.57 LogWmrHmd: WMRInterop: RemotingDisconnectedEvent: Reason: 12 TransportConnectionFailed LogHoloLensAR: Warning: HoloLens AR session disconnected from peer

I can connect the device in device portal, and in the Unreal device manager I can also connect my hololens. device portal Unreal device manager

Anyone meet this problem?

I'm trying to deploy an application I built in Unity to the HoloLens 2 by following this tutorial.

Here are the build settings I entered in Unity.

When I go to deploy the application by selecting "Master", "ARM64", "Device" and then "Start without debugging" in Visual Studio I get this error "There were deployment errors. Continue?". If I select yes then I get the below error:

Can anyone tell me if one can directly select the DNN AI core for neural network evaluation on HoloLens 2.

I have read about the HPU, which includes and DNN AI core in the GitHub repo here. But in the doc for the devices that can be used only CPU and GPU are listed.

I'm working on hololens 2 project with inage tracking. 2019LTS unity Vuforia 9.8 MRTK 2.6.0

Flollowing the tutorial： Working with the HoloLens Sample in Unity And start an empty project.

I found the object can't autoly disappear when I move the image out of vision. I use the default setting and test it on my andriod device. It always works just as what I want. I read the other any similar question but seems out of time. And I never meet this problem in andriod-vuforia development.

I’m making a HoloLens 2 app using Unity and MRTK, I need to instantiate a gameObject in the coordinates of the user hand when the user performs an Air-tap gesture, I was trying to achieve this using IMixedRealityInputHandler, but the problem is that in order to detect the air-tap gesture, the user need to be pointing towards the gameObject that has the script to implements that interface attached,

Any idea about how can I detect the air-tap mid-air without the need of pointing something directly?

I'm trying to implement a smooth authentication flow for an hololens 2 app in a no-internet environment. Following setup is running currently

• I'm hosting an identity server (Ory Kratos) with OAuth2 possibilities that holds user information.
• I'm hosting a resource API that only logged in users should be able to access.

The user should be able to access their resources within the HL app. Possibilities to solve this are

1. Redirecting the user to a 2D page like in this article. But typing a long password in an Augmented Reality app is hard.
2. Using a second device (smartphone/laptop) like in this blog. But requiring another device is suboptimal.

Both approaches are fine, but they both lack a smooth user experience. My idea was to utilize the Windows Accounts that are already on the HL device. Microsoft Docs has a small section on how to take advantage of linked identities on HoloLens, see here. But it doesn't really explain how to "link" them to a custom identity server.

So I was wondering, is it possible to use these Windows Accounts that are already on the HL device and somehow link them to my identity server?

Or does anybody have a better idea to provide a smooth authentication flow in Augmented Reality? I'm open for ideas.

I'm using the MRTK for a hololens app and I need to select a file that the user puts in their document folder. I am trying to access the FileOpenPicker and use the PickSingleFileAsync() function from a button press to get the file and then load that into my app.

The code inside this function is basically what I am doing:

(Code Source)

I'm trying to send GPS-coordinates from an Android device to the Hololens by BLE-advertisments. The problem as far as i see, the events from BluetoothLEAdvertisementWatcher do not trigger on the Hololens.

I have tried copy-paste both this implementation and this on the receiver side, no received event.

This is the current implementation in Unity, i have implementated the same functions in a blank UWP-C# project and deployed directly on the Hololens with the same result.

I have already successfully used BLE advertising to broadcast information from one android device and receive it on another. Now I want the observer to be a Unity-app running on the HoloLens v2. The HoloLens does not need to connect to the android-device as I am aware that this does not seem to be supported. I am looking for a broadcaster -> observer solution.

As mentioned, I already have the broadcaster written and it works fine with android -> android. Now I have implemented my observer in Unity, largely inspired by this article, and it looks like this: