We use PostHog, a product analytics tool, to understand how visitors use our website. The service is operated by PostHog, Inc., 2261 Market Street #4008, San Francisco, CA 94114, USA, via its EU infrastructure at eu.i.posthog.com, where all event data for this website is stored.
PostHog processes data such as pages viewed, interactions, device type, coarse location (derived from IP) and referrer.
Without your consent, we measure reach in cookieless mode only: nothing is stored on or read from your device, and attribution uses a privacy-preserving, daily-rotating hash generated on PostHog’s EU servers — individual visitors cannot be recognised across days. Legal basis is our legitimate interest in privacy-preserving reach measurement (Art. 6 (1) (f) GDPR).
If you accept analytics in the consent banner, PostHog additionally stores a pseudonymous identifier in your browser to recognise returning visits and tie events into sessions. Legal basis is your consent (Art. 6 (1) (a) GDPR, § 25 (1) TTDSG). You can withdraw it at any time via the "Cookie settings" link in the site footer; withdrawal does not affect the lawfulness of prior processing.
Retention: PostHog event data is retained for up to 12 months. A data processing agreement pursuant to Art. 28 GDPR is in place with PostHog.