Starting January 31, 2017, GitHub introduced a Delegated Account Recovery feature that allows users to link their GitHub account with their Facebook account, providing an alternative recovery option in case of two-factor authentication lockouts. This feature is particularly useful if a user loses their phone or token and does not have a backup, enabling them to regain account access through Facebook. Previously, users needed to prove account ownership via a confirmed email address and a valid SSH private key to disable two-factor authentication. To utilize this new recovery method, users must save a token on GitHub's security settings page and confirm its storage. If a lockout occurs, users can contact GitHub Support and use Facebook to initiate the recovery process, offering a convenient alternative to traditional methods.