Most Commonly Asked Questions
Q: What are the differences in the two sizes of the YubiKey 4 (the keychain vs. the nano)?
A: The keychain size is intended to be carried with you on… your keychain, along with your set keys. Insert it into a USB port when you are requested to authenticate, and you can remove it when you have finished authenticating. The smaller nano size sits flush in the USB port and, although it can be removed whenever you want, you can leave it inserted in the laptop. Of course, if you are concerned about the physical security of having your token accessible, such as when you take your laptop with you when you travel, you can remove the nano-sized YubiKey. Other than size, there is no difference between the keychain and nano version of the YubiKey 4.
Q: Where can I use my YubiKey?
A: You can use a YubiKey to secure access to a wide range of both enterprise and consumer applications. These include computer login and VPN, password managers, encryption, and more. You can also use the same YubiKey for securing your Gmail and Dropbox accounts. It’s easy to setup and try it out!
Q: How does this work with mobile?
A: Use your YubiKey NEO along with your NFC-enabled mobile phone (Android phones only) to log in directly to mobile U2F applications, such as GitHub. You can also “bless” your phone with a computer secured with YubiKey, as currently done by Google, Dropbox, and LastPass.
Q: What happens if I lose my YubiKey?
A: It depends on how you are using your YubiKey. For U2F-enabled applications, you have specified a backup mechanism for logging in (such as SMS) from the beginning, so you can be sure you can always access your email or data. You can then log in and remove that YubiKey and easily add a new one. Of course, we hope that you have a backup YubiKey, just like you have a backup set of keys for your home or car, and you can then use that YubiKey to authenticate with. Remember, since this is two-factor authentication, if someone finds your key, that person still needs to know your user name and password — without both your user name, password, and YubiKey, there is no way anyone can log in to your accounts!
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