Since the Mobile application, on a Nuxeo Server >= 9.2, will use the OAuth2 flow to do the authorization in an external browser (Safari on iOS, Chrome on Android) we will avoid the 2 login actions.
A typical flow would be:
- Click on a Nuxeo link in an email
- Authenticate in Safari
- Click on "open in app" when on the document
- If the Mobile app is not yet authorized, do the authorization - without doing the authentication again as Safari is already authenticated