The disclosure provides a method of operating a duty-free retail operation at an airport. The airport includes a secure zone and a non-secure zone, which are separated for passengers by a security checkpoint. The duty-free store may be located in the non-secure zone of the airport. The airport may also include a product storage area and a product pickup area, which can be accessible from the duty-free store or remote from the duty-free store. The product storage area may store copies of the products displayed in the duty-free store. A passenger customer can purchase products displayed in the duty-free store, for example, by scanning QR codes associated with products and making a payment using a mobile computing device. Copies of purchased products may then be retrieved from the product storage area and delivered to a designated product pickup area before the customer boards the plane.