None of us want strangers accessing our accounts online. You might use a password manager, or two-factor authentication via SMS, but there's another way you can stay protected -- physical security keys. Following Google, Dropbox and others, Facebook has added support for these privacy-centric dongles today. When you log into your account, that means you can choose to prove your identity with a special USB stick (that supports the open Universal 2nd Factor (U2F) standard), rather than a code sent to your phone. Yes, it's another object to keep on your keychain, but in return, you'll be getting a superior level of protection.