Sessions, cookies and devices
Your Green Dot account can be signed in on several browsers at once — your laptop, your phone, your work desktop. This page explains what each session actually is, how long it lasts, and how to inspect or end each of them from your account.
What a Green Dot session actually is
When you click a magic link, our server issues a signed session token and stores it in a first-party cookie named gd_session under the greendotplay.org domain. The cookie is HttpOnly, Secure, SameSite=Lax. It has a hard maximum lifetime of ninety days from the moment of sign-in; every request extends the "last active" timestamp but never the absolute expiry.
The session table in your account
Open Account → Sessions and devices. You see one row per active session, with these columns:
- Device — a name derived from the User-Agent string (for example "Firefox 137 on macOS", "Safari on iPhone").
- City — approximate city derived from the IP at last sign-in (nothing finer than city, GeoIP is coarse for privacy).
- Last active — human-readable timestamp of the last request from that session.
- Sign out — a button that immediately invalidates that session token on our server. The signed-out browser gets a "please sign in again" screen on its next request.
Signing every session out
The bottom of the sessions table has a "sign out everywhere" button. It invalidates every session token on your account, including the one you are currently using. Next click on greendotplay.org shows the sign-in page. Use this if you have lost a device or if you want to be sure no forgotten browser is still holding a live session.
Cookies used by Green Dot
gd_session— session token, first-party, HttpOnly, Secure, up to 90 days, essential.gd_prefs— your dark-mode preference, your keyboard-layout choice for the puzzle, one year, functional.gd_cookie— records your consent choice for the cookie banner, one year, functional.
No third-party trackers, no advertising cookies, no fingerprinting scripts. See our cookie policy for the full detail.
Multi-device play
On Pro plans, your puzzle progress syncs across every device signed in to the account. Start on your phone during lunch, finish on your laptop at home — the board picks up where you left it, streaks and stats included. Free and Standard plans lock each puzzle to the device that opened it first (the syncing engine costs us real money, hence Pro).