Turn on two-factor sign-in
Turn on two-factor under Security in Settings, with an authenticator app such as Google Authenticator or 1Password. Each sign-in then asks for a 6-digit code from it.
Turn on two-factor
- Open Settings → Security and confirm your password.
- Under Two-factor authentication, press Set up 2FA.
- Scan the QR code with your authenticator app.
- Enter the 6-digit code and press Verify.
- Save the backup codes with Copy codes, Download or Share.
- Tick I saved these and press Done.

Can't scan? Can't scan? shows a key to type in. In the app, Open in authenticator app adds it on the same phone.
What you see
Two-factor authentication reads Enabled. Backup codes shows how many you have left, and each code works once.
The code is refused
That code didn't work — check your authenticator app and try again. Use the newest code your app shows.
Turn it off
Press Turn off, then Turn off in Turn off two-factor authentication?. Anyone with your password alone can then sign in.
Who can do this
Every member sets up their own two-factor. No permission is needed.