Every value below was read from your browser, by this page, just now. No site asked your permission to read them, and none has to. Together they sketch a fingerprint that can follow you with no cookie involved.
Nothing here is simulated, stored, or sent. This page has no analytics and makes no network requests with your data; every value is computed in your browser and stays there. View the source and check.
This is a simple local hash of everything above: not how a real tracker stores you, but the same idea. Run this page again after hardening the browser in unit 12, or from another browser, and watch which values move and which do not. The ones that do not move are the ones that identify you.