Until now, Mozilla has been operating on a complicated system in which you had to type a pairing code from one browser to another browser. It’s now beginning to move towards a simple username-password approach.
The old approach worked without Mozilla needing to maintain a database of its users, but it has proved to be too complicated as time has gone on. Mozilla has recently lost that aversion and now offers Firefox accounts.
Sync has become increasingly popular with users as they move from single PC use to multiple computers, tablets and phones. The new upgrade helps to remember the user’s passwords and parts of the browser history to autocomplete addresses typed into the address bar.
Mozilla’s username-password authentication for sync is currently the nightly version on Fireworks but will slowly be rolled out to the more stable versions. Mozilla explained that “while the old version of Sync will continue to work, the latest version of Firefox doesn’t support adding new devices to the old version of Sync. This means that you won’t be able to sync with a new device.”