Experts cite three reasons that QR codes haven’t caught on. First, people are confused about how to scan them. Two, there’s little uniformity among the apps required to read them. Last, some who have tried the technology were dissuaded by codes that offer little useful information or simply redirect the user to the company’s website.
(Why Marketer Love for QR Codes Is Not Shared by Consumers
Quick-Response Codes Tuck Media Neatly Into an App, but Only 5% of Americans Have Actually Used Them By: Kunur Patel )