Produces persistent, respawning "super" cookies in a browser, abusing over a dozen techniques. Its goal is to identify users after they've removed standard cookies and other privacy data such as Flash cookies (LSOs), HTML5 storage, SilverLight storage, and others.
You would need to pass it from client-side Javascript to the backend by using something such as an image tag, AJAX request, or other remote resource request.
What's the best way to get the value of the evercookie on a backend script?