This is partcile effect which emit from human body using Human Segementation function in Unity ARFoundation that wraps ARKit3.
I also explain the codes in this blog. (Japanese Only)
- Unity2019.3.4f1
- Universal RP 7.2.1
- AR Foundation preview.3 - 3.1.0
- ARKit XR Plugin preview.4 - 3.1.0
- XR Legacy Input Helpers 2.0.6
- Visual Effect Graph 7.2.1
- Xcode 11.3.1
- iPhone 11 pro (iOS 13.3.1)