Privacy policy

Mathias Kessler, Pi (π) Art Project, Lange Straße 31, 1st floor, 60311 Frankfurt am Main, Germany. Email: info@pi-314159.org

This website is hosted by Hostinger International Ltd., 61 Lordou Vironos Street, 6023 Larnaca, Cyprus. When you visit, the server processes technically necessary data (IP address, date and time, page requested, browser and operating system) in server log files to deliver the website securely and reliably. The legal basis is Art. 6(1)(f) GDPR. Log files are deleted after a short period.

This website sets no cookies, uses no analytics or advertising services and loads no third-party content when you visit a page. The typeface is served from our own server.

If you email us, we process your details only to handle your request (Art. 6(1)(b) or (f) GDPR) and delete them once they are no longer needed, unless statutory retention periods apply.

We send invitations only to people who have given their consent (Art. 6(1)(a) GDPR). We use rapidmail (rapidmail GmbH, Wentzingerstraße 21, 79106 Freiburg, Germany) as our processor for sign-up and sending; the sign-up form is hosted on its servers and opens only when you click the sign-up link. Sign-up uses double opt-in: you are only added after confirming via the link in the confirmation email. You can withdraw your consent at any time via the unsubscribe link in every email or by writing to us.

Links to Instagram, to the video of the artist talk and to artists’ websites lead to third-party services. Data is transferred to the provider only when you click such a link; their privacy policy then applies.

You have the right of access, rectification, erasure, restriction of processing, data portability and objection (Art. 15–21 GDPR). Contact info@pi-314159.org. You may also lodge a complaint with a data protection supervisory authority, for example the Hessian Commissioner for Data Protection and Freedom of Information, Wiesbaden.

October 2026