This document discusses using QR codes for smart marketing. It proposes a conceptual model for virtual shopping using smartphones enabled by QR codes. Consumers can scan QR codes to gain product information before purchasing. The document then reviews the literature on virtual shopping and mobile tagging. It describes the methodology for a proposed system where customers can register and then scan QR codes to access product data and add items to an online cart. The conclusion discusses the advantages of QR codes for mobile shopping in avoiding queues and reducing fraud.