For the QR Code, I am not decided right now since you still would have to need to login before getting the the data from the backend. So it would only cut out the open the url and navigate to settings right now.

Ok, yes, I see, but that’s true only for the GPSLogger setup. Both OwnTracks and Overland will extract all the needed information from the link, without needed other access to the server. That’s why I see it as a simpler process: setting everything up on a computer, then once you need to configure your phone, provided you have OwnTracks or Overland already installed, just open the camera app, point, shoot and follow the QR code and you’re all set.