What happens if the queuer closes their browser?

Nothing. The queuer keeps their place. The queue lives on Flowby’s servers; the browser is just a window onto it. Closing the tab doesn’t cancel the position.

The way back is to re-open the original browser tab. The URL contains the queuer’s queue-number ID, so loading it again drops them straight back into their queue view. They can find it via:

• Browser history
• A bookmark, if they made one
• The original tab if they only minimised, didn’t close

Worth telling queuers up front: if they expect a long wait, bookmark the queue page or pin the tab.

Don't tell them to scan the QR code again

Scanning the queue sign’s QR code creates a new queue number at the back of the line. Flowby doesn’t recognise returning queuers from the wall sign, so a queuer who’s lost their original tab is starting over. (Printed kiosk tickets are different: those carry their own QR code that does restore the original position.)

The only way for a queuer to actively leave the queue is to tap the Leave queue button.