01Cookies and browser storage
A cookie is a small piece of text a website asks your browser to keep and send back on later visits. Browser storage (localStorage and sessionStorage) is similar, but it stays in your browser and is never sent to the server by itself. This page lists both.
03Browser storage
These keys are written only when you use the feature they belong to. They stay on your device: the site reads them in your browser and does not send them to us.
| Key | What it remembers | How long |
|---|---|---|
| site-theme | The theme you picked, or that the daily theme rotation is on | Until you clear it or pick again |
| site-game:… | Progress, settings and high scores in the home-page games | Until you clear it |
| state_resources_… | A cached copy of a state's public resource list, so the map loads quickly | 24 hours |
| defaultSearchState | The state you set as the default for bulletin search | Until you clear it |
| push-notifications-dont-ask… | That you dismissed the notification prompt | Until you clear it |
| gs-active-tab | The last tab you opened in the members-only study area | Until you clear it |
| learn-guide-thread | Your conversation with Lumen, so it survives a page change (sessionStorage) | Until you close the tab |
04Offline cache
The site can be installed as a web app. A service worker keeps copies of pages, scripts, fonts and map tiles in your browser's cache so the site loads quickly and works offline. The cache holds site files, not information about you.
05Cookies from other services
Our pages embed no advertising, analytics, social media or video services, so no third party sets cookies through them. Map outlines and map tiles come from jsDelivr, CARTO and Esri as plain file downloads that carry none of our cookies.
Our network provider, Cloudflare, may set a strictly necessary security cookie (such as __cf_bm or cf_clearance) if it needs to check whether traffic is automated. It is used only to protect the site.
06Why there is no cookie banner
Privacy laws such as the EU and UK ePrivacy rules require consent before a site stores information on your device, except where the storage is strictly necessary for a service you asked for. Everything above falls under that exception: staying signed in, protecting forms, and remembering choices you made yourself. We use nothing that needs consent, so there is nothing to ask. If we ever add analytics or any other optional cookie, we will ask first and update this page.
07How to control them
- Sign out to remove the sign-in cookie.
- Clear this site's data in your browser settings to remove every cookie, storage key and cached file listed here.
- You can block cookies for this site. Public pages keep working, but signing in will not.
08Changes to this policy
When the site starts using a new cookie or storage key we will add it here and update the "Last updated" date. Questions: [email protected].