For US smartphone owners who report using their devices while shopping in-store (”smartphone shoppers”), the degree to which they engage in various activities differs by the type of store they are in, says Nielsen in May 2012 survey results. For example, 57% have scanned a QR code for product details while in an electronics store, compared to 36% who have done so in a department store, the next most-popular location for this activity. Other stores where smartphone shoppers have scanned QR codes are mass merchandisers (31%), grocery stores (26%), office supply stores (20%), clothing stores (16%), and convenience stores (8%). Just 5% have done so in a furniture store, and only 2% in a dollar store. Read the rest at Marketing Charts.