Privacy Policy
Last updated: June 23, 2026
This Privacy Policy explains how this website handles your data. We have built it to collect as little as possible: we do not store any personal data about visitors except for the optional analytics and session-replay recording described below, which runs only after you consent.
Who we are
The data controller for this website is:
Fast Four sp. z o.o.
Meliorantów 67c
42-209 Częstochowa, Poland
KRS 0001077770 · REGON 527276671 · NIP 9492265972
For any privacy question or to exercise your rights, contact us at [email protected].
What we collect
Strictly necessary cookie. We store a single cookie to remember your cookie-consent choice. It contains no personal data and cannot be switched off, as the site needs it to respect your decision.
Analytics & session replay (optional). If you consent, we enable PostHog, which we self-host in the EU (at phe.fastfour.tech). PostHog measures how the site is used and records anonymised session replays (mouse movement, clicks, pages viewed and similar interaction data). This may constitute personal data under the GDPR. Nothing is collected until you opt in, and you can opt out again at any time.
We do not sell your data, we do not use it for advertising, and we do not share it with third-party advertising networks. Because PostHog is self-hosted, analytics data stays on our own infrastructure.
Legal basis & retention
The strictly necessary cookie relies on our legitimate interest in respecting your choice (Art. 6(1)(f) GDPR). Analytics and session replay rely on your consent (Art. 6(1)(a) GDPR), which you give through the cookie banner. We retain analytics data only as long as needed to understand and improve the site, and delete it when it is no longer required.
Your choices
You can accept or reject analytics at any time using the . Withdrawing consent stops any further recording immediately. You also have the right to access, correct or erase your data, to restrict or object to processing, and to lodge a complaint with your supervisory authority (in Poland, the President of the Personal Data Protection Office, UODO).
Changes
We may update this policy as the site evolves. The "last updated" date above always reflects the current version.