Turning on two-factor authentication
Two-factor authentication (2FA) adds an authenticator app code to your sign-in, so a sign-in link alone is not enough to get into your account.
Setting it up
Open the security settings in your account, turn on 2FA, and scan the code with any standard authenticator app. Enter a code from the app to confirm it works. We then show you 10 recovery codes, once. Save them somewhere safe: each code works a single time if you lose your phone.
Signing in with 2FA on
After your sign-in link, enter a code from the app, or a recovery code if the phone is not at hand. You can regenerate recovery codes from the same settings page; the old set stops working when you do.
Alerts
We email you a security alert whenever 2FA is turned on, turned off, or the recovery codes are regenerated, so changes you did not make are visible right away. Locked out completely? Write to us through the contact form and we will verify your identity another way.
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