Fast check-in turns the door into a single, fast lookup: scan a ticket or search for an attendee by name, and see that ticket's full history right there on the screen. No guessing whether it was already scanned, transferred, or resold.
For venues running high-volume doors, that history is the difference between a smooth line and a standoff. Your team sees the same information every time, whether they are staffing one door or three, so decisions at the door are fast and consistent.