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.
That is a good use for them. Recently I saw one on a company's van which just baffled my mind. I don't know if they wanted somebody to come up while the van was parked and scan the QR code but it was just stupid and goes in line with what the article is saying.
1. I've recently been looking for a good way to let a crowded train know that I probably have bedbugs on my clothing.
2. Internet access is really good underground.