Handtracking in PC SDK

You are correct, it unfortunately only works in the Unity Editor right now.

From the documentation: "This functionality is only supported in the Unity editor to help improve iteration time for Oculus Quest developers."

Here is a slightly related idea from the feedback platform, but not exactly what you meant:

https://oculus.uservoice.com/forums/918556-oculus-rift-s-and-rift/suggestions/38690920-optical-handtracking-for-rift-s

Since (curiously) not many other people seem to have brought this up on the Quest section of the feedback forum I just added an idea for this in case people want to vote for it:

https://oculus.uservoice.com/forums/921937-oculus-quest-2-and-quest/suggestions/44148732-enable-hand-tracking-for-pc-vr-apps-when-using-the

OpenXR has a hand tracking extension that Varjo headsets use to support hand tracking in PC VR. Hopefully Oculus will implement support for that as part of their OpenXR implementation. (crossed fingers)