Create an ARCore API key.
Please refer to the documentation for more information.
Select Edit > ProjectSettings > XR Plug-in Management > ARCore Extensions and paste the API key in the API Key field.
Execute PositioningTools-Unity\_tools\createSymlinkWindows.bat (Windows) or PositioningTools-Unity/_tools/create_symlink_osx.sh (Mac) .
This script creates symbolic links in the unity project for the folder containing sample scenes.