Privacy
Only what's necessary.
What this site stores about you, why, for how long – and how to delete it.
Who processes the data
The data controller is Matyáš Průša, Brno. Contact: matyas.pru@gmail.com, +420 510 510 643. Send any request about your data to this address.
What I store and why
I only collect what's actually needed for each purpose. The site has no sign-up or user accounts.
| What | Which data | Why (legal basis) | How long |
|---|---|---|---|
| Contact form | name, email, topic, message | replying to you (legitimate interest, Art. 6(1)(f)) | 60 days |
| Free order | name, email, phone, company/school, project description, chosen slot | preparing a quote and meeting (pre-contract steps, Art. 6(1)(b)) | 120 days, for the duration of a project if we work together |
| Workshop certificate | name (pupils: first name and initial only), course, date, place | verifying the certificate (legitimate interest) | while the certificate is in use, deleted on request |
| Feedback | anonymous rating, optionally the school name | improving workshops (legitimate interest) | 400 days |
| Live quiz | an auto-assigned nickname and answers – no name | running the game | 1 day |
| Website check | the address you enter | running the check | not stored |
| AI tip of the week (newsletter) | sending the tips based on your consent (Art. 6(1)(a)), confirmed by a click in an email | until you unsubscribe; unconfirmed sign-ups 7 days |
Cookies, analytics and bot protection
- The site uses no advertising or tracking cookies, which is why it doesn't ask for consent.
- I measure traffic with Cloudflare Web Analytics – no cookies and no cross-site tracking. I only see totals (visits, pages, countries).
- The site only counts anonymous daily totals of events (e.g. “2 orders sent”, “quiz finished 5 times”) – no IP address, no identifier and no cookies.
- Forms are protected by Cloudflare Turnstile, which uses technical browser signals (such as the IP address) to spot bots. Nothing is stored in your browser for advertising.
- Your browser's storage (localStorage) only keeps your language and light/dark choice. The live quiz remembers your nickname for the duration of the game.
Who can access the data
Only I can see the data. The site runs on infrastructure by Cloudflare, Inc., which processes data on my behalf. Cloudflare may transfer data to the USA – protected by the EU–US Data Privacy Framework and standard contractual clauses.
The newsletter and confirmation emails are sent from my Google (Gmail) mailbox; Google processes them for delivery. Every issue has an unsubscribe link.
Messages and orders are picked up from the site by my personal assistant JARVIS, which runs on my own computer and helps me sort them and draft replies. I don't pass data to anyone else and never sell it.
Your rights
- Find out what data I hold about you and get a copy.
- Have it corrected or deleted.
- Restrict processing or object to it.
- Lodge a complaint with the Czech Data Protection Authority (uoou.gov.cz).
Just email matyas.pru@gmail.com – I'll handle it without undue delay, within 30 days at most.
Children and school workshops
At workshops pupils never sign in or enter their names. The live quiz assigns nicknames automatically and feedback is anonymous. Certificates go to teachers; if pupils get one, the online check shows only a first name and initial.
Changes
This policy applies from 14 October 2026. If anything changes, I'll update this page.