Privacy
Last updated: November 2026
Who is responsible
SIGMA IV
Chamber of Commerce (KvK) number 87192470
info@sigmaiv.com
What this website does not do
This website sets no cookies, uses no analytics or tracking, embeds no third-party content and has no forms. Fonts are delivered from this website itself, so your browser does not contact font services.
Your theme choice
If you switch between the light and dark theme, that choice is stored in your browser's local storage under the key "sigma-theme", so the site remembers it. It never leaves your device. You can remove it by clearing the site data in your browser.
Demos
The interactive demos run entirely in your browser on synthetic data that ships with the page. Nothing you do in them is sent anywhere.
Hosting
This website is hosted by Cloudflare. Like any website, the servers that deliver these pages process technical data such as your IP address and the pages requested, in order to deliver and secure the site. SIGMA IV does not use this data to identify visitors.
Contact
Questions about privacy can be sent to info@sigmaiv.com. Mail to this address is forwarded to SIGMA IV by Cloudflare Email Routing.