
RELATED: How to Set Up Google’s New Code-Less Two-Factor Authentication If you have a YubiKey NEO, you can also set this up with NFC for your Android phone if you wish. Just insert the key and press the button on it when you’re asked to do so. When you log in from a new PC, you’ll be prompted to authenticate with the USB security key. This doesn’t work on an iPhone, as only Android provides apps with access to the NFC hardware. If you have a key that supports NFC, you can tap it on the back of your Android device when signing in to authenticate, when prompted.

When signing in from a platform that doesn’t support security keys-for example, any browser on an iPhone, Microsoft Edge on a Windows PC, or Safari on a Mac-you’ll still be able to authenticate the old fashioned way, with a code sent to your phone. (Opera also supports U2F security keys, since it’s based on Google Chrome.) Mozilla Firefox now includes U2F support, but it’s disable by default and must be enabled with a hidden option at the moment.

