Your account is a username, a password kept only as a bcrypt hash, and the characters you make. Your browser keeps a sign-in token and your settings - language, theme, which character you are playing - so the realm remembers you between visits. When you sign up, a one-way fingerprint of your address is stored, never the address itself, so that one person cannot quietly hold a dozen accounts. There is no advertising, no analytics and no tracking, and nothing here is sold or passed to anyone.