Privacy

Who is responsible

Lu Jin, Zurich, Switzerland · lu.jin.ixd@gmail.com

Legal basis: legitimate interest in running and improving the site (Art. 6(1)(f) GDPR).

Hosting

The site runs on Vercel (USA). To deliver the pages, the server logs your IP address, the time and the pages you open.

Visit statistics

I use Vercel Web Analytics and PostHog (EU servers) to count visits and see which pages are read. Neither uses cookies, and PostHog stores no visitor ID in your browser. PostHog records how you move through a page, such as scrolling, clicks and the page content shown to you. Text you type and the Ask Lu conversation are masked and never recorded. Recordings are kept for a limited period. You can turn PostHog off, including recording, with the button at the end of this page.

Ask Lu

When you ask Ask Lu a question, your recent messages in the chat are sent to Anthropic to write the answer. This site does not store the conversation. To prevent abuse, your IP address is kept for about one hour to limit the number of questions (Upstash). Please don’t enter personal or confidential information.

Services outside Switzerland

Vercel and Anthropic are based in the USA. They process data under their own data protection terms (see Anthropic’s privacy policy).

No tracking cookies

This site sets no cookies for advertising or tracking, so there is no cookie banner. Your language choice, and your choice to turn PostHog off, are saved in your browser so the site remembers them.

Your rights

To ask what data relates to you, or to have it deleted, email me at the address above. You can also complain to the Swiss Federal Data Protection and Information Commissioner (FDPIC) or to the data protection authority in your EU country.