A high number of US consumers demonstrate a significant lack of understanding as to what QR codes are or how they work.
Garden plants sold at Home Depot have QR codes on each plant tag that enable customers to check out, for example, whether the plant needs frequent watering.
A February 2011 study fielded for marketing and communications agency MGH by Vision Critical found that 65% of US smartphone users had seen a QR code.
According to February 2011 research from agency MGH, awareness is high among smartphone owners. Nearly two-thirds have seen a QR code, and about half that number, or one-third overall, had used one.