Idéia Genial! Claro que devemos levar em conta que a Coréia do Sul tem uma tradição de internet rápida e uso de tecnologia (móvel ou não) para auxiliar na efetividade da campanha. (via Igor Escobar no twitter)

http://www.springwise.com/retail/seoul-retailer-3d-qr-codes-sun-deliver-discounts-quiet-times/

In Seoul, retailer uses 3D QR codes and the sun to deliver discounts only during its quiet times

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.