Korean Emart recently placed 3D QR code sculptures throughout the city of Seoul that could only be scanned between noon and 1 pm each day — consumers were given discounts at the store during those quiet shopping hours.
Aber was wird mit den Schnäppchen, wenns mal bewölkt ist?
http://www.springwise.com/retail/seoul-retailer-3d-qr-codes-sun-deliver-discounts-quiet-times/[/font]