Cookie notice

Version 2026-09-22.1 · 17 September 2026

Essential account cookies

The app uses an essential session cookie when you open the login, registration or account flow. It protects forms against forgery and keeps you signed in. Its name is dartford-session in development or __Host-dartford-session when configured for HTTPS production. It contains a random identifier, not your password.

The anonymous security session lasts up to 30 minutes; a login session lasts up to eight hours. Logout clears the cookie and revokes the session. Cookies are HttpOnly and SameSite=Strict; production authentication cookies are also Secure. Blocking this cookie prevents account login but you can still browse the public maps.

Optional Google Analytics

With your permission we use Google Analytics (measurement ID G-B7T9CEBGLM) to understand visits and page usage. Google receives technical information such as your browser and device details and the pages visited. Analytics does not load until you choose Accept analytics. You can reject it or withdraw permission using Cookie settings in the footer. We do not enable advertising personalisation or Google signals, and do not load analytics on account or administrator pages.

Google Analytics may set _ga and _ga_B7T9CEBGLM cookies, normally lasting up to two years. Your accept/reject choice is saved in browser local storage for 180 days. Withdrawing disables collection in this browser and removes accessible Google Analytics cookies; it does not delete information already received by Google. See Google privacy information.

Map services

Map tiles are requested directly from CARTO and may be cached by your browser. See our privacy notice for provider details.