About Single Sign-On
We require users to sign on using an existing account at one of:
- Google (any e-mail account can be set up as a Google account; you do not need to use Gmail.)
- Facebook (we only require access to your public profile)
- GitHub (we're geeks at heart)
- Apple (if you're using our iOS or web apps; unavailable on Android.)
Can I sign in using just a username and password?
No. We require you to sign in with an existing account at one of our supported sign-in services. This helps fight fraud and spam and makes it easier for users to quickly log in. If you don't want to link your Facebook, Google or Apple accounts, GitHub accounts can be created with any private e-mail service you like.)