Cookie and tracker policy
Last updated : 2026-07-02
This page describes the use of cookies, trackers and local storage on the QubKey website. The table below lists all cookies and localStorage entries used on the public landing page.
Cookie and local storage inventory
This table details each HTTP cookie and localStorage entry, with its purpose, duration and legal basis.
| Type | Name | Purpose | Duration | Legal basis |
|---|---|---|---|---|
| HTTP cookie | qubkey-landing-language-v2 | Remember your language preference on a future visit to a URL without a language segment (e.g. home page). | 1 year | Strictly necessary (functional) |
| localStorage | qubkey-analytics-consent | Remember your choice to accept or refuse the audience tracker. | 6 months | Consent |
| localStorage | qubkey-landing-language-v2 | Sync the displayed language on the client (same key as the technical language cookie). | Persistent (until manually cleared) | Strictly necessary (functional) |
| localStorage | theme | Remember your theme preference (light, dark or system). | Persistent (until manually cleared) | Strictly necessary (functional) |
| localStorage | qubkey-device-fingerprint | Pseudo-anonymously identify your device to prevent duplicate votes on blog articles, only after clicking Like. | Persistent (until manually cleared; created only on first like) | Legitimate interest |
| localStorage | qubkey-tools-session-v1 | Keep you signed in to web tools (JWT stored client-side). | 30 days or until sign-out | Strictly necessary (functional) |
| localStorage | qubkey-tools-preferences-v1 | Remember your web tools UI preferences (e.g. display options). | Persistent (until manually cleared) | Strictly necessary (functional) |
What trackers?
We use an audience tracker (analytics) that records visits after your consent: page viewed, IP address, language, screen resolution, device type. A local identifier for blog likes is created only after an explicit click on Like. Access and security logs are collected by our monitoring system for site security.
Purpose
Analytics: audience measurement and site improvement. Blog likes: preventing duplicate votes without an account. Security logs: protection against attacks and incident investigation.
Consent
The audience tracker is only activated after your consent (cookie banner). You can accept or refuse. Refusal does not prevent use of the site. Strictly necessary cookies and storage (language, theme) and the blog fingerprint (after Like click) do not depend on this consent.
Duration
Detailed durations are listed in the table above. Analytics visit data is retained for 12 months. Security logs: 6 to 12 months.
Learn more
For details on data collected and your rights, see our Privacy Policy.
Change my choice
You may withdraw your consent or change your preference at any time. Clicking below will show the consent banner again on the home page.