Available for Facebook’s desktop users since 2017, the authentication method requires that the user confirm authentication requests with the help of a physical security key.
This additional authentication step is meant to significantly increase account protection, as it relies on the use of a physical device that an attacker is assumed to never have access to.
“Starting today, you can set up two-factor authentication and log into Facebook on iOS and Android mobile devices using a security key, available to anyone in the world,” Facebook announced.
