Lets explore some Facebook security settings where you can see all logged in sessions and logout Facebook from all devices or locations, set login notifications, Set security code and much more.
The Where You’re Logged In a section of your Security and Login Settings shows you a list of devices and browsers that have been used to log in to your Facebook account recently. Each entry includes the date, time and approximate location when logging in, as well as the type of device used to access your account.
>>> Go to your Security and Login Settings
>>> Click on the Where You’re Logged In section
>>> Find the session you want to end and click End Activity
>>> Clicking End Activity will immediately log you off of Facebook on that computer, phone or tablet.