Last updated: 12 October 2026
In short
We use one essential cookie to keep you signed in, plus a few browser settings (cookie notice, light/dark mode). No advertising, analytics or tracking cookies.
1.What we use
The portal uses only what it needs to work. There are no advertising, analytics or tracking cookies, and nothing is shared with advertisers.
| Name | Type | Why | How long |
|---|---|---|---|
| sb-…-auth-token | Cookie (essential) | Keeps you signed in after “Sign in with Google”, and lets the server check you are a member. | Until you sign out or the session expires |
| atc-cookie-notice | Browser storage (essential) | Remembers that you have seen the cookie notice, so it is not shown again. | Until you clear your browser data |
| theme | Browser storage (preference) | Remembers light or dark mode. | Until you clear your browser data |
| region_id:… | Browser storage (performance) | Remembers the internal ids of the CEC and the five regions so pages load faster. Contains no personal data. | Until you clear your browser data |
2.Third parties
- Google sets its own cookies on google.com while you sign in. These are covered by Google's privacy policy.
- Videos in the Video Gallery are played from YouTube (privacy-enhanced mode), Vimeo or Google Drive. Those services may set cookies once you press play.
3.Your choices
The sign-in cookie is strictly necessary: without it you cannot use the members' area, and the public pages work without signing in. You can delete cookies and browser storage at any time in your browser settings; you will then need to sign in again. See the Privacy Policy for everything else.
Questions about this page? Write to website.atcguild@gmail.com.