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Cookie policy

Last revised 5 October 2026

We keep this short because there is very little to say: one strictly necessary cookie to keep you signed in, a little browser storage to remember your interface preferences, and no advertising trackers at all.


1. What cookies and browser storage are

A cookie is a small piece of text a website asks your browser to store and send back on later visits. Browser storage (“localStorage”) is similar, but it stays in your browser and is not sent to our servers with each request.

2. The cookie we set

NamePurposeTypeLifetime
hai_sessionKeeps you signed in. It holds a signed token identifying your account, so that each page and console request can be tied to you without asking for your password again.Strictly necessary, first-partyUp to 14 days, or until you sign out

The cookie is signed, so it cannot be forged or altered without detection. It is marked HttpOnly, so scripts on the page cannot read it; SameSite=Lax, so it is not sent with most cross-site requests; and Secure in production, so it travels only over an encrypted connection. Signing out clears it.

Because this cookie is strictly necessary to provide the service you asked for, it does not require your consent under most cookie laws. Without it you cannot stay signed in.

3. Browser storage for your preferences

We use your browser's local storage to remember small interface choices, such as whether you have dismissed the onboarding video, so we don't show you the same thing twice. These values stay on your device, are not sent to us automatically, and are not used to identify or track you. Clearing your browser's site data removes them; the only effect is that the interface forgets your preferences.

4. What we don't do

5. How to control them

Every major browser lets you view, block and delete cookies and site data in its settings. If you block the hai_session cookie you will not be able to sign in; everything else on the public site continues to work.

6. Changes and contact

If we ever add a cookie or storage item, we will update this page first, and if it is not strictly necessary we will ask for your consent before setting it. Questions: our published contact address. See also our privacy policy.