In this tutorial, we learn how to get the OpenXR Hand-Tracking Data from the Unreal Engine API and how to consume it to draw virtual hand models using cubes (as hand joints). We also dive into gesture recognition by implementing a simple pinch gesture detection.
In the first part, we focus on UE 4.26 to 5.4 API. And, on the second part, we learn how to update the project to work with 5.5.
https://dev.epicgames.com/community/learning/tutorials/PYaj/introduction-to-virtual-reality-openxr-hand-tracking-and-gesture-detection-in-unreal-engine