Tactizen stores a session cookie to keep you signed in and a long-lived first-party device_uid cookie. Once signed in, we also collect your IP address and a browser fingerprint (canvas, WebGL, screen, timezone, language, hardware). This data is used only to detect multi-accounting, ban evasion and abuse — never sold or shared with third parties for marketing. See our Privacy Policy for the full list and your rights under the GDPR.