Use U2F security key and Prompt together with Google 2-Step

Google 2-Step Verification now allows you to register both a Universal 2nd Factor (U2F) security key and Google Prompt as authentication methods for your G Suite account.

Google 2-Step adds an additional layer of security when you sign in to an account by requiring you to log in with a password and an additional security measure. Until recently, you could only choose one of the above authentication methods in addition to the Google Authenticator app, SMS (text) or voice codes, and printed backup codes.

Using Multiple Two-Factor Authentication Methods

There are many benefits of registering multiple two-factor authentication (2FA) methods. You’ll likely have a preferred primary method, but there are a few scenarios, where additional two-factor methods can be helpful in providing access to your account:

Lost, Stolen or Broken Phone
Dead Phone Battery

  • A U2F security key is a great backup option to authenticate to campus services and to add or update your other 2FA methods.
  • It requires a computer with a USB port and Google Chrome web browser.
  • The device is available at the NC State Bookstores for about $13 and can easily be kept on your keychain!

Travel Abroad
No Cellular or Wireless Service

  • The Google Authenticator app for Android and iOS devices and the Duo Security app for Android and iOS devices can be set up to generate codes for use with Google 2-Step. App-generated codes work without cell service or wireless coverage, even if your device is in airplane mode.
  • If you have your mobile device set up for Duo Push notifications, you already have codes available to you for Duo by pressing the “key” icon inside the Duo app.

Review the available 2FA methods and ensure you have set up additional backup options. Don’t get stuck by relying on only one method.

If you have any questions or need help to set up other two-factor methods for your NC State account:

  • Contact the NC State Help Desk at or 919.515.4357(HELP).
  • Visit the Walk-in Center in the West Dunn Building at the intersection of Thurman Drive and Dan Allen Drive.
  • Attend a 2FA training session for campus users.