The Facebook container addon has been developed for the browser Mozilla Firefox, a tool that the possibilities of Facebook to track your browsing behavior is not completely excluded, but at least significantly reduced.
With such a container add-on, so to speak, online identities can be separated from each other by storing different cookies within the Facebook Container Tab, than in a normal tab which usually maps your complete surfing behavior.
You can easily find the add-on in Firefox in the settings menu under “Extensions” and enter “Facebook Container” in the search field. Here you can install and activate the additional tool.
See picture: (click to enlarge)