Earlier quoted context omitted.
when have you ever scanned a QR code and learned about/bought something? Shopping for dishwashers in-store, even after doing lots of online research. The in-store display tags have very minimal info. Best Buy has/had a QRCode on each product that took you to a webpage for that item with a lot more info, reviews, etc. It was one of the main reasons I actually bought a dishwasher AT Best Buy instead of elsewhere.
Wouldn't it have bee just as effective to have http://bestbuy.com/12345 on the label.
URL: Turn on phone, swipe right to unlock, press search button, type url, press enter.
QR: Turn on phone, swipe up to open QR reader, point phone.
Yes, I'm one of those rare people who not only scans QR codes, but does it enough to bother making it one of the three actions he can take from his lockscreen (Camera, QR, Unlock)