A recent study of QR code usage among consumers in the US, UK, Germany and France found that Americans were the most likely to have used the technology. According to the study of 2,000 Americans and 1,000 Europeans undertaken by Pitney Bowes, US consumers were more likely to report having scanned QR codes across every medium by which the codes were delivered.For QR codes printed in magazines, nearly two out of five Americans between 18 to 24 years old and 36% of Americans between 25 to 34 years old reported having scanned one. In Germany, where usage was next highest, 27% of 18- to 24-year-olds and 23% of 25- to 34-year-olds had tried scanning barcodes in magazines.

via US Ahead of Western Europe in QR Code Usage – eMarketer.