Last revision: 19 February 2018
What are cookies?
Cookies are small pieces of information sent by the web server to your browser, and stored by the browser. The information in the cookie is sent back to the server each time you request a page from the server (or the browser request information from the server). This enables a web server to identify you and your browser for the lifetime of the session or cookie.
Cookies on our website
NPDC uses a session cookie (named PHPSESSID) to link session information on our server to your browsing session. The cookie contains a string which is unique for your session. The session contains information about forms you filled in during your session, this can include any values you provided in forms (except passwords) and validation errors when submitting a form. If you are logged in your user id is also stored in the session. The information stored in the session is deleted after 24 minutes of inactivity (not requesting pages from the server), the cookie is deleted when you close your browser.
Third party cookies
On pages where a map is displayed OpenStreetMap can set a cookie named qos_token which is used by OpenStreetMap to optimize performance of their servers. This cookie is deleted after 1 hour.