Facebook has announced, starting today, that iOS and Android users will be able to login to their account with a hardware security key, bringing more than three years of feature for the desktop to mobile devices.
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Since 2017, Facebook has allowed users to use a hardware security key to access their desktop accounts. Mobile users, however, have remained limited to protecting logs to their account with an SMS authentication code or authentication app.
Hardware security keys are like a small USB-shaped device that you have to manually push a button, connect directly to your device, or use NFC to verify your identity. Since hackers cannot obtain the physical key themselves, it is considered to be one of the safest possible security lines for online accounts.
Facebook says it encourages everyone to buy a security key and add the extra level of security to their account. Setting up a security key is relatively simple; users can go to the Security and Login section of settings within Facebook for iOS and Android, select Security Key, and follow the on-screen prompts.