Making a fresh start I want to delete my Facebook account because there are lots of things on it.
Under Recommended, find Choose friends to contact if you are locked out, and click Edit.
It will log you out of every active Facebook session except the current one.
Once you enable Facebook's two-factor authentication, which we strongly recommend, Facebook will ask you for a security or confirmation code to log in from a new location or device.
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For extra security, you can on Facebook, and to avoid the latter, to keep your data at hand.