It joins other account-recovery features such as the ubiquitous "forgot my password" and security questions, as well as less conventional methods, like identifying friends' faces in pictures or recovering passwords via text message.

CNN: Mark Milian,

When someone who has enabled the feature is unable to login using the normal means, they can click "forgot my password" and request that keys be sent to their specified friends via Facebook message.

CNN: Mark Milian,