Question Hand Tracking not working when build !

Hello everyone,
I'm using XR Interaction toolkit hand tracking feature in my project, I noticed that hand tracking not working when i build the project. I read somewhere that i need to change the OpenXR backend type to legacy as a solution, but i can't manage to find where to change this value. So where can I find it ? Or if there's any other alternatives for making hand tracking work on build I'll accept it.
Cordially.

 

I'm not sure if you are encountering similar things as me, but here's the post I made.

https://forum.unity.com/threads/uni...anagement-openxr-plugin-bug-solution.1432105/

 

Thank you @jimmyding but i don't think this is the same problem, the main issue that i'm facing is when i build my project and run using oculus quest 2, hand tracking is not working, this happened twice when i was using oculus sdk for hand tracking and now with the new xr interaction toolkit hand tracking. In both cases hand tracking is not working when i build (i'm building for windows platform), i saw in a thread somewhere that i need to change openxr backend type to legacy but i didn't manage to find where to change that value.

 

Hand Tracking on PCVR with Oculus only works if you are in dev mode on Oculus software. Then it also works in a build.

 

thank you for replying @Qleenie, but it doesn't seem to be working in a build. I tried several ways to solve this and i built it from different unity versions and different PC's but i didn't work even in a development build.

 

Thank you @ericprovencher, i will try and compare between the two project and tell you if it solves the problem. But i'm sure that hand subsystem is enabled on the android build.

 

@ericprovencher yes and it's working in editor but not when i build it for PC.

 

Seems clear now but can I know why or if it will be available in the future? because I was using Oculus SDK hand tracking when I faced this issue, now i'm using XR Interaction Toolkit and the problem persists.

 

Thank you @ericprovencher, I managed to make it work. I think the problem was on the oculus desktop app in which some features are not enabled. Now it works fine thanks a lot.

 

Is Standalone hand tracking something that is going to be implemented in the future.

 

Sorry for not giving the last update on this thread, @bmdenny I solved it as eric said, I set up the developer options again as in this screenshot and everything works fine. Enabling Developer Runtime Features seems solved it. Hope this helps.

 

I'm facing the same problem using Quest 3. But the desktop app shows only the first 3 settings till "Demo Mode". Is there another way to activate "Developer Runtime Features"?

 

found the solution: a developer account is needed

 

I'm running into the same problem as everyone else. Oculus hand tracking no longer works in the Unity Editor, which makes development of hand-tracking apps basically impossible.

On the Quest settinggs, I've got "Hand and body tracking" enabled as well as Auto Switch from Controllers to Hands. Hand tracking works on the Quest, and I can put down the controllers and interact using my hands.

In the Oculus app on the PC side I'm using the Public Test Channel, and I've enabled "Developer runtime features".

In Unity, my build target is Android. I'm using the latest available packages, as shown in the screenshot below. I have the Oculus OpenXR runtime selected, and I've got the Hand Tracking Subsystem and Meta Hand Tracking Aim feature groups enabled, also shown in the screenshot below.




(the Android tab shows the same, and I've also got Meta Quest Support enabled there)

The hands are not being tracked. I do see the two menu icons following my hands, but I suspect those are being drawn by the headset. However, they do demonstrate that hand tracking is enabled on the Quest.

I've opened up the HandVisualizer script, and added some debugging statements. The OnTrackingAcquired method is never called, and in the OnUpdatedHands method (which is indeed called) the subsystem.leftHand.isTracked and subsystem.rightHand.isTracked values are always false.

Have I missed anything, or is this a bug in Unity or on the Oculus end?

 

When you say standalone build target, do you mean the settings shown in the Android tab of OpenXR? If so, I have the feature groups enabled there as well. See screenshot below.

 

Right, but if you check my previous screenshot you'll see that I already have those two feature groups (Hand Tracking Subsystem and Meta Hand Tracking Aim) enabled.

 

Yeah, I am:



So, I guess it's a bug. The thing is, I'm not sure whether the bug is with Unity or with the Oculus runtime.

I'll try getting your github example. Either it'll work or it won't, and either way it'll help narrow down the problem.

 

... and the results are interesting.

I don't see hands when I run your example either. The controllers work, but when I put them down my hands do not appear.

So it doesn't seem to be anything as simple as an incorrect setting in Unity, and it also doesn't appear to be a Unity bug (unless it was introduced in a very recent version of Unity -- I'm running 2022.3.12f1, which is only slightly ahead of what you used for your example).

I do see the two menus attached to my palms (hamburger menu tracking my left hand and Oculus menu tracking my right hand), so I know that hand tracking is working on the Oculus side.

I definitely have "Developer runtime features" enabled:




Out of curiousity... when was the last time you tested it? I'm wondering if Oculus changed their runtime and broke something.

I'm using a Quest 2 for testing (I also have a Quest 1 and a Quest Pro, but I ultimately need to get it working on the Quest 2).

 

I had the same experience as BernieRoehl. I was building for Android and wondering why hand tracking wasnt working. I was getting this error: hand tracking subsystem not found, can't subscribe to hand tracking status. enable that feature in the openxr project settings and ensure openxr is enabled as the plug-in provider. I realized I only enabled the hand tracking subsystem for Android, and after I enabled it for Windows. Now I can see the hand tracking in the editor and it seems to be working.

 

Is this thread still active? Is it possible to see my hands using XR hands in Windows builds already? Does it know anybody?
I can track my hands in Unity Editor but I am not able to get it working on standalone...

EDIT: Ok, I finally got it working. I couldn't find the developer mode in standalone app. I had to enable the developer mode on the phone app first in order to see that option in standalone as well.
After enabling the developer mode, I can track my hands in standalone.

 

I'm trying to do an Android build but Hands don't show in the app. I can see my hands and use them to open the app in my Quest 2 but then when I open it using hand gesture I get a popup that says "Switch to controllers, To ues this app pick up controllers." When I open the app with the controllers I can see the controllers and everything works fine. I'm using a template so I know all of the setting are acurate. Meaning I've installed XR hands demo and build HandVisualizer scene but no hands. The build works fine but no hands.