Ticket screens for your kitchen.

The first four are in. Clear one.

Tap a ticket's header and it goes. A new one arrives from the right, the way it does at the pass. Nothing here is a picture of software: it is the same card the product draws, doing the same thing.

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• Tap or click the header.
• Or swipe the card right.
• Or focus it and press Enter, Space or the right arrow.

Bumped the wrong one? Undo sits under the board for four seconds and puts that exact card back in that exact slot.

Back up to the board

Now you are not touching the board.

At full tilt nobody reaches across the pass to find a card. The head of the rail goes on and the rest slide up. This button does exactly what the header does — same action, same undo, same queue — from wherever your hands already are.

Watch the board while you press it. The card at the front leaves, the others move up, and the replacement starts its own clock at zero.

Back up to the board

These started when you did.

Every clock on the board began at zero when this page loaded. None of them is pretending to be older than your visit, and there is no order behind any of them. What is real is the turn: green while it is fine, amber while it is pushing, red when it is late — and the word changes with the colour, because roughly one man in twelve cannot tell you which is which.

• On time — under five minutes.
• Pushing — five minutes.
• Late — seven.

Timers run at 4× speed so a turn is watchable while you read this. The thresholds are the product's own and are not sped up with them.

Back up to the board

Drop the network. Keep bumping.

This is the part every competitor writes a sentence about, which is worth nothing to somebody who has already been burned by one. So: drop it, then go back to the board and clear a ticket. The bump lands. It queues here. Reconnect and the queue drains oldest first, in order, which is the only order that is safe.

Nothing here fakes a network, and it does not need to. What it shows is the architecture: the board never asks the server for permission to accept a bump.

Back up to the board