Not exactly fingerprint, but it may help to validate or not existing fingerprinting attempt. E.G: you identify user has being x, so you push a unique content t

Not exactly fingerprint, but it may help to validate or not existing fingerprinting attempt. E.G: you identify user has being x, so you push a unique content to it, and tell to cache. Then later, you have a 62% of change some browser is user x. You just check if it's using the cached version of not. It will confirm at least if it's user x.