What data this site collects, why, and your rights. Last updated: 17 October 2026.
Dr Dimitris Messinis, neurofeedback and biofeedback practice, Rue du Puits-Godet 8, 2000 Neuchâtel, Switzerland. Contact: dimitris@messinis.ch.
This website, messinis.ch, is operated by Dr Dimitris Messinis. Any question about how your data is processed can be sent to the email address above.
The site collects what it needs to function, cookieless visit statistics, and, subject to your consent, usage analytics and marketing data.
No tracking cookie is set without your consent. A single functional entry stores your consent choice in your browser's local storage. This choice is also included in the booking source measurement described below.
Cloudflare Web Analytics counts page views for every visitor, without cookies and without storing anything in your browser.
If you accept, the site uses Google Analytics to measure how pages are used in aggregate. This includes:
This event includes the consultation type, without a name or email address. Event retention is set to 14 months.
If you accept, Google Ads may use your visit data to show relevant ads elsewhere on the web (remarketing), and to count bookings that follow a click on an ad. No health-related information is used for ad personalization.
Before you choose, or if you decline, the Google tag sends Google only signals without cookies (page, time, browser type, and whether you arrived from an ad), which reach Google with your IP address, which Google uses to estimate visits and bookings in aggregate.
To measure where bookings come from, the site keeps your first visit source in your browser for the session. With marketing consent, a cookie keeps it for up to 90 days from the first visit. Withdrawing that consent removes this cookie from your browser. Advertising click identifiers are excluded from this booking source record. When a booking is confirmed, its confirmation time, page language, visit source and your consent choice are recorded with Cloudflare in the European Union. Records older than 90 days are deleted from the active database each day. Recovery copies may retain them for up to 30 further days. Requests may be processed in other countries as described below.
Appointment booking is handled by OneDoc (OneDoc SA, Geneva, Switzerland). When you book through the widget embedded on this site, OneDoc collects information needed for clinical care:
OneDoc and the practice each act as a controller of the booking data they receive. This data is passed to me to enable clinical care, and retained in line with Swiss legal requirements for patient records (typically 10 years). OneDoc's privacy policy applies in addition: privacy.onedoc.ch/en/privacy-policy.
The site is hosted on Cloudflare (Cloudflare, Inc., United States). Technical access logs (IP, browser type) may be retained briefly by the host for security purposes.
Google (Google Analytics, Google Ads) and Cloudflare operate from the United States. Transfers rely on standard contractual clauses and the Data Privacy Framework, mechanisms recognized as providing an adequate level of protection for data transferred outside Switzerland and the European Union.
Under the revised Swiss Federal Act on Data Protection (nFADP, in force since 1 September 2023), you have the following rights:
To change your cookie choices, use the Cookies link in the footer. For anything else, email dimitris@messinis.ch. You'll get a response within a reasonable time, typically 30 days.
You may also lodge a complaint with the Federal Data Protection and Information Commissioner (FDPIC) in Bern.
This policy may be updated. The date at the top reflects the current version.