suggestion for Swift

you can use FLutter and talk from flutter to golang / gomobile.
Then you eliminate all swift.

Here is one example:
https://github.com/empirefox/flutter_dial_go

there are a few others out there.

Showing a Camera view to scan the QR code with flutter is quite easy.

[cristaloleg]

I’m not the author, but thanks for the link :)

Can you link me to the author.
Will have a go at converting it and put on GitHub.