This site sets at most two cookies, both tied to how it works. No trackers, no analytics, no third-party cookies, no advertising. The first is strictly necessary: without it, signing in and sending the contact form are impossible. The second only exists if you explicitly ask for it, by ticking "remember this device" during two-step verification.
| Name | Purpose | Lifetime |
|---|---|---|
proglabai_sid |
Keeps you signed in between pages, and carries the anti-forgery token of the contact form for visitors who are not signed in. Contains a random identifier only, no personal data. | 30 days, or until you sign out |
proglabai_trust |
Only if you ticked "remember this device": tells the server this device has already passed two-step verification, so the six-digit code is not asked again here. Contains a random token only. It is revoked when two-step verification is disabled or the account password changes. | 30 days |
Beyond that cookie, the app uses your browser's local storage, which stays on your device and is never sent to the server on its own:
Signing out clears both, along with every page kept for offline use. Only the interface files stay behind: font, logo, stylesheet, and they hold nothing about you.
You can block cookies in your browser settings, but the sign-in will then fail: the service has no other way to recognise you between two pages. As no optional cookie exists, there is no preference panel to configure.
Last updated : 15 August 2026