First, we're launching one-time passwords to make it safer to use public computers in places like hotels, cafes or airports. If you have any concerns about security of the computer you're using while accessing Facebook, we can text you a one-time password to use instead of your regular password.
Second, the ability to sign out of Facebook remotely is now available to everyone. These session controls can be useful if you log into Facebook from a friend's phone or computer and then forget to sign out. From your Account Settings, you can check if you're still logged in on other devices and remotely log out.
Lastly, when people log in to Facebook we will regularly prompt them to keep their security information updated. If you ever lose access to your account, having this information helps us verify who you are and get you back into your account quickly.