I am looking to capture the referrer and keep content elements controlled as said user browses the site. I'm open to doing this with custom PHP or using an existing WordPress plugin(s).
For example, if the user came from Facebook, I'd want to hide certain menu items, the footer, and show certain side bar content during that session.
If the same user were to close their browser and come at the site directly, they would see the full unrestricted site.
Thanks for the help!