More security for your Google account
Google offers you the option of U2F protection for your log-in to Gmail, Google Apps, AdWords, YouTube, Google+, Blogger and more. FIDO U2F is an open two-factor authentication standard that was originally developed by Google and is now managed under the auspices of the FIDO Alliance.
U2F-capable security tokens protect your account in addition to your password (two-factor authentication). This makes your account secure, even if your password is hacked or your YubiKey is stolen – because another person would need two factors (password and YubiKey) to sign into your account.
What do I need for U2F authentication with Google?
All you need is a U2F-capable security key, a Google account and the Google Chrome Browser (from Version 38). No extra software is necessary for two-factor authentication of Google.
U2F with YubiKeys
All YubiKeys, except for the YubiKey Standard and YubiKey Nano, are U2F-capable, and they can be used to protect your Google account. No installations are needed for this. Simply insert your YubiKey into a USB port and tap on the gold sensor during authentication.
How do I set up U2F authentication for a Google Account?
You will find step-by-step German-language instructions which guide you through the setup process here.
Or you can watch the following video tutorial (English):