How to Add a Security Key to Facebook
By Rachel Needell
A security key is a physical device you can take with you that acts as a key to accounts with sensitive information. In the digital age, it's nice to have something tangible that works the old-fashioned way instead of having to rely on memory or have your iPhone on you at all times for two-factor authentication. If you already own a security key and are ready to secure your Facebook account, here's how to set up a security key.