This article is no longer maintained, so its content might be out of date.

The Sync KeyRecovery Key is used to encrypt your data before it's sent to the Mozilla servers. Think of it as a key that locks your information in a vault that only you can open. This means that neither Mozilla nor anyone else can read your information without having your Sync KeyRecovery Key to unlock it.

// These fine people helped write this article:Michael Verdi, scoobidiver, Ibai. You can help too - find out how.
Volunteer for Mozilla Support