This is a slide on attachment for the Iphone XS
to be used with the 3D scanning software "Heges"
available from the app store.

https://hege.sh/
As there is only one 3d scanning sensor on the front facing camera of the iphone Xs you can only scan an item facing the display such as your own face etc.
This attachment Allows you to scan objects in front of you as you see the result on the iphone screen.
simply attach a small mirror as shown in the photo to the printed holder and download the Heges app.
There is a feature in the settings of the app to automatically reverse the scan when using a mirror so the resulting model is correctly orientated.

I am not the developer of the app or linked in anyway.
The app is still being improved and features added so please support the developer.

This is designed for the iphone XS as that is what I own but of course could be altered to fit the XR