Two-Factor Authentication for Beginners

“A title card reading “two-factor authentication,” with an image of a login form, two-factor authentication codes on a phone, and a “sign in” button.

Why you should use 2FA

2FA approaches

2FA codes received through SMS text messages
2FA codes received via the Google Authenticator app.

Let’s turn on 2FA!

Animation of a person tapping their Yubikey, plugged into a computer’s USB port.
User navigating through Google’s security key registration interface.
A screenshot of Google’s 2FA backup codes

Get started!



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Martin Shelton

Martin Shelton

Writing about security for journalists, as well as beginners. Principal researcher at @freedomofpress.