Your data, kept to a minimum.
What this site collects, why, and what you can ask me to do with it. Last updated October 2026.
Who I am
This site is run by Hugo Herrera, trading as OnDynamics, based in Copenhagen, Denmark. For anything about your data, email privacy@ondynamics.com.
What I collect
When you send a message. The contact form sends me your name, email, organisation, the topics you pick and your message. I use them only to reply and to keep a record of our conversation. The legal basis is my legitimate interest in answering you, or steps you ask for before a contract.
When you use the chat. The chat on the home page is answered by my AI assistant, and sometimes by me. It keeps your messages and the replies, the page and section you were reading, and whether you are on a phone or a computer, so it can answer in context and I can follow up. It also keeps the approximate town and country your IP address points to, and your browser’s time zone, so I can tell conversations apart; the address itself is not kept, and the town is looked up on this site’s own server (IP Geolocation by DB-IP). If you leave your email, I use it only to reply to you. The legal basis is the same as for the contact form.
In your browser. The chat keeps your conversation, and your email if you leave it, in your browser’s local storage, so you can pick up where you left off. The conversation starts afresh after 12 hours without a message; your email stays until you clear this site’s data in your browser. If you speak instead of typing, your browser’s own speech recognition turns it into text, which for some browsers happens on their maker’s servers, such as Google’s for Chrome.
When you browse. The site does not use advertising or analytics cookies, and the fonts and scripts are served from this site rather than third parties. The one exception is the chat’s check that you are a person, which comes from Cloudflare. The hosting provider keeps standard server logs, such as IP addresses and the pages requested, for security and reliability.
Visitor statistics. The site counts its own visits, without cookies and without sending anything to anyone else. Each visit is counted under a code made from your IP address and browser that changes every day, so it can’t be linked back to you, and the address itself is not kept. I see which pages people arrive on and leave from, where they came from, the type of device and browser, and the approximate town and country, looked up on this site’s own server (IP Geolocation by DB-IP). A small script on each page also reports which links and buttons are clicked (never anything you type), how far you scroll, your screen size and any errors in the page; it stores nothing on your device. Detailed records are deleted after 30 days, and daily totals after about 13 months. If your browser sends a Global Privacy Control or Do Not Track signal, you are not counted. The legal basis is my legitimate interest in understanding how the site is used.
How long I keep it
Messages are kept for as long as we are in touch and for up to two years after, then deleted, unless they become part of a contract.
Chat conversations are deleted after 90 days. If you leave your email in the chat, the conversation comes to me as a message and is kept like one.
Who else sees it
No one, apart from the providers that host this site and deliver its email, who process data on my behalf. I do not sell or share your data.
The chat uses three more, also on my behalf: Anthropic, whose Claude model writes the assistant’s replies from the conversation; Telegram, through which new conversations reach my phone so I can answer them myself; and Cloudflare, whose Turnstile check confirms you are a person, using your IP address and details of your browser.
Your rights
You can ask to see, correct or delete the data I hold about you, object to its use, or ask for a copy. Email me and I will respond within a month. You can also complain to the Danish Data Protection Agency (Datatilsynet).