Cookie policy
Last updated: 26 September 2026
To check before publication: the list below must match the cookies actually set. If you run no measurement tool at all, remove that section — a policy declaring cookies that don't exist is as wrong as one that omits those that do.
What cookies are
Small text files a website stores on your device. Some are essential to make the site work; others collect statistics or build profiles. Only the first kind may be set without consent.
How we handle consent
On your first visit a banner offers three equally available choices: accept, decline, or choose in detail. Until you choose, no cookie other than the technical ones is set.
Declining is as immediate as accepting: both buttons carry the same weight and sit at the same level. You can change your choice at any time from the "Cookie preferences" link in the footer, or .
We record the date and version of your choice. After twelve months you will be asked again, and likewise if the purposes change.
Technical cookies — always active
Required for the site and your account to function. No consent is needed under Article 5(3) of the ePrivacy Directive.
| Name | Purpose | Duration |
|---|---|---|
| tw_lang | Remembers the language you chose | 12 months |
| tw_cookie_consent | Remembers your cookie choice (written to local storage in your browser, never sent to a server) | 12 months |
| session | Maintains your sign-in session | Session / 14 days |
Statistical cookies — with consent
These tell us which pages are visited and from how many devices, in aggregated and anonymous form. No profiling, no cross-site tracking, no sharing for advertising.
If you decline, they are not set and the site works exactly the same.
Advertising and profiling cookies
We use none. No advertising, no tracking pixels, no remarketing tools.
Managing cookies in your browser
Besides our panel, you can manage cookies in your browser settings. Disabling technical cookies may prevent you from signing in.
More information
For the processing of data collected through cookies, see our privacy policy. Any questions: [email protected].