This page is about the Multi Party Authentication System of Public Labs.
We can log in through different providers like Twitter, Facebook, Google and Github on the public lab along with the basic login flow.
The user ids of the users are stored in the format ``oauth-facebook:user_id``, ``oauth-twitter:user_id``, ``oauth-google:user_id``and  ``oauth-twitter:user_id``. 
So, the users should not be able to create tags with these prefixes.