This only becomes troublesome if you have a website into which you login. Any time your fingerprint changes, it can be updated provided you login to a controlle

This only becomes troublesome if you have a website into which you login. Any time your fingerprint changes, it can be updated provided you login to a controlled website before changing it again. This allows a fingerprint to be associated with an account or person. So facebook, gmail and this website could track the websites you visit given the fingerprint data as long as it is relatively unique. Let's now imagine an entity that scrapes most of the internet traffic and has connections within facebook, google, etc. This company could easily figure out what pages you visit using a combination of browser fingerprint from the request header and IP. This can be tied to a person using accounts. They can even identify who within a household with the same IP visits which website.