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Accounts aren't set up on this copy of the site. You can still use a device profile below.
Device profiles and backups
You don't need an account to learn: progress is saved in this browser. A device profile keeps it separate for each person on a shared computer. It lives in this browser only and isn't an account: there's no password, nothing is verified, and anyone using this browser can switch to it.
You're signed in, so your progress is saved to your account. Sign out to use a device profile.
A name used before reopens its profile. A new name starts empty.
Using the device profile , in this browser only.
Profiles on this device
Move your progress to another browser
Export the profile you're using, with its progress, and import the file in the other browser.