Good article in The Economist:
"Over the past year, QR codes have quietly slipped into the marketing mainstream. Three-quarters of American online retailers surveyed by Forrester, a research firm, use them. In April nearly 20% of smartphone users in America scanned one, up from 14% in May last year.........
Scanlife, a provider of QR code services, saw the number of unique users scanning codes through its system triple in the year to March. .... It also took time for people to realise why advertisements contained mutant crosswords. And perhaps most important, marketers have only now worked out how best to use QR codes. Simply sending customers to the company website is not enough, says Melissa Parrish, an analyst at Forrester."
Worth reading the entire article here:
http://www.economist.com/node/21556993
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