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Virtual supermarket shelves at a subway station in South Korea.While waiting for the train, commuters can browse and scan the QR codes of products which will later be delivered to their homes (source: Tesco)

• Quick Response (QR) codes need to be better used with a clear strategy in mind, and not be used for the sake of doing so. Badly implemented QR code campaigns may erode consumer interest, and this may prove detrimental given the emerging rival technologies entering the market. According to Leon Perera, CEO of Spire Research, QR codes are being used only by a minority of the customers who see them. “These codes have gained a foothold in print ads, posters, and so on–partly because they symbolize technological sophistication, not because most customers are actually using them,” Perera said.

http://zd.net/SSMnhn