Fourteen years ago, it seemed like a good idea to have perl.org SSO solution. So, we built one -- Bitcard -- and deployed it across perl.org and related sites. Today, it doesn't make much sense. Nobody wants yet another account to keep track of -- especially only for limited use such as perl.org related sites.
We're switching our authentication systems to use Auth0. If you want to have a login just for us, you still can. You can also use your Google, GitHub, or Facebook account, and Auth0 will proxy the identity. Through the magic of OAuth2, we don't get access to anything except your name and email address.
If you are logging into a perl.org site for the first time with Auth0, be sure to use the same email address you used with Bitcard, or your may end up with a new account.
rt.perl.org and rt.cpan.org have already switched to Auth0. There's a few stragglers remaining, and then we'll shut down Bitcard. It has served us well.
Thanks again to Auth0 for their great service!