Setup for Google
1. Enable 2-step Verification
Login to your gmail account first.
Click "My Account" to go to account settings.
In the "Sign-in & security" tab, click the "Signing in to Google".
Now you can enable the 2-Step Verification.
Follow the prompt step by step to turn on 2-Step Verification.
2. Register your security key
Then you can name your key.
You can also click here to get help about turn on 2-step verification.
And here to get help about the register the security key.