No, no, its automated. See, when you purchase your items, go the cashier somewhere in the store, they process your paperwork, then add it to the app (Gotta do for different stores), then at your last location after shopping, like Hermes, LV, etc., you will go to the little offices scattered throughout the city, they process the paperwork so when you get to the airport, there's a bank of machines, that ask you questions, etc. scan your QR code, then off you go. You don't need to show your purchases, queue in line, etc. It'a refund tracker as you have already validated it at the customs (Global Blue Office). It's really easy nowadays.