Select the option to use a mobile app, or Google Authenticator.Tip: Some services call this 'two-step verification.' Usually, you will do this by selecting Settings or Security, and then selecting the option to Enable two-factor authentication. Enable two-factor authentication for your service.Setting Up Your YubiKey in Yubico Authenticator 6.0+ for Desktop We have created both a desktop and mobile version of this app for you to use so you can use it on a Windows, Mac, Linux, or Android. You can use Yubico Authenticator, which is similar to Google Authenticator. The codes generated are OATH-TOTP codes, a type of one-time password, that are usually six-digits. To use a code at one of these sites, you use an application, such as Google Authenticator, to generate the codes.

Example sites where you can use codes to authenticate include Amazon, Dropbox (if you aren't using U2F), Evernote, Facebook, and many others. These instructions show you how to set up your YubiKey so that you can use two-factor authentication to sign in to any account that requires authenticator codes.

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