The problem is the window, not the technique
Most people in this situation already know what would help. They are not short of techniques; they are short of window. A minute is less than almost any tool needs before it starts helping — by the time the headphones are in, the app is open and a session is chosen from a list, the minute is gone.
So the only move left is to hold it in and walk through the door. That is containment, and containment is not recovery. The residue does not dissipate; it compounds across the day, and it is paid for by the next person you speak to — and by whoever is at home later.
What to do with the minute you actually have
Stop rehearsing
Running the first thirty seconds of the meeting on a loop keeps the alarm system on. You are not preparing; you are practising the stress. Give the minute to your body instead.
Make the exhale longer than the inhale
This is the part of paced breathing that carries the work. You do not need to count perfectly, and counting in your head is one more thing your attention has to hold.
Let something else keep time
The reason a paced rhythm helps is that you stop deciding when to breathe. If the pacing arrives through your hand, your eyes stay free and nobody can see it happening.
Walk in before you feel finished
You are not trying to arrive calm. You are trying to arrive with less carried over than you would have otherwise, which is a realistic thing to do in sixty seconds.
Why "before" and not "during"
Once you are at the table your attention is owed to the room, and any practice that competes with it loses. The moment that can actually be served is the gap immediately before — the corridor outside the door, the car before you go in, the minute after one call drops and before the next connects. Tacet is built for that gap and does not pretend to serve the table.
Doing it without anyone noticing
The reason people skip this in an office is not that it takes too long. It is that pulling out a meditation app in a corridor is a statement about yourself you would rather not make to a colleague walking past.
Tacet removes the statement. The screen goes dark, there is no audio, and the pacing arrives as a vibration you set to whatever strength suits your hand, your pocket or the table. From outside, it is a person holding a phone that is doing nothing. Afterwards there is nothing to explain, because there was nothing to see.
Calm down before a meeting — without anyone noticing.
Make it reachable in the moment
A minute of window is also a minute of friction budget. Put the widget on your home screen, or add the tile to your quick settings on Android, the control to Control Centre on iOS, or assign it to the Action Button — one press, from wherever you already are, at the length you used last. Sessions started that way always run, even in a week when your free allowance is spent, because the moment you most need the practice is the wrong moment to meet a price.