If mappers logged in with OpenStreetMap (OSM), and we were editing OSM geometries in our QField project, then this would allow for easy attribution of user edits when uploaded. --- Tech details: Suggesting this here instead of the https://github.com/opengisch/QFieldCloud repo to gauge interest. This is easy enough to implement as an OAuth provider, but there are some caveats. OSM doesn't correctly implement the entire OAuth 2.0 spec. To work around this in another project, I made a small Golang binary middleware: https://github.com/hotosm/login/tree/main/osm-userinfo (returning the logged in user info in the correct format). Something else to consider is that unlike most OAuth providers, OSM does not return an email address. There is no way to link up profiles between different OAuth providers. A workaround to this could be a separate 'Connect to OSM' workflow, for already logged in users (however, this means modifying the UI, so probably not desirable). Simple primary OAuth login via OSM is a good start point. I have worked with OSM OAuth a lot and would happily make a PR for this, after small discussion / clarification.