At !113, creation and login with identifiers was changed to be submitted using POST requests, so that the identifiers aren't part of the URL. I realized now that all the other views (eg: list projects, issues, etc.) still show the user identifier in the URL. iirc how Django authentication works, this could be solved in several ways: - getting `user` (in this case user_identifier) from the request object - using a session - using a middleware Maybe the `UserIdentifier` class should inherit from `AbstractBaseUser` to don't have to implement methods. Also all the urls that contain `<str:user_identifier>` should not require the user identifier string. @whycurliness: is this something you would like to modify? If not, no worries.