Sessions & staying signed in

You don't sign in every shift

Once you're in, Snowmass keeps you signed in so you're not re-verifying a code every time you open the app in the cab. Your session is designed to be convenient day to day while still expiring on a sensible schedule.

How long a session lasts

• 30-day sliding window — each time you use Snowmass, the clock resets, so an active user stays signed in.
• 90-day absolute maximum — regardless of activity, a session ends after 90 days and you sign in fresh. This caps how long any one session can live.

How sessions are protected

• The session token is stored only as a SHA-256 digest on the server, never in plain form.
• Each session records the device and IP it was created from, so unfamiliar sessions are recognizable.
• Signing out revokes the session immediately — the token stops working everywhere it was used.

On shared tablets

Operator tablets are often shared across a crew. Sign out at the end of a shift, or use device handoff when a run moves to a new device — the newest device takes control and the old one goes read-only, so a run is never active in two hands at once. When in doubt, signing out is the clean way to hand a tablet to the next operator.