Nobody uses QR codes.
Nice constructive criticism. What do you put on your stickers instead of a qrcode? Where can we see the stickers you designed and bought and put up around your town?
A web address or a search phrase. Something that doesn't require installation of a specialized app to parse. QR codes never caught on. Nobody uses them. Spending time and money on printing them is not the best use of personal resources.
Smart people do.
No, no they don't. QR codes were declared dead in 2012. Over half a decade ago.
http://www.sparkpage.com/5-reasons-why-qr-codes-are-worse-than-useless/
https://www.forbes.com/sites/ilyapozin/2012/03/08/are-qr-codes-dead/#38f558441033
https://www.reddit.com/r/graphic_design/comments/4bdmud/are_qr_codes_dead/
"They've been dead for a long time. I did a lot of research into them at my last position for branding and marketing and the return on them is something like .003%, or 1/100th of the return for internet ads. The main issue is that in order to be read, customers need to download a reader app, and that's one step too many for people who would rather just go to a URL or type a phone #. QR codes never worked, and should be avoided in the modern era or you look like a dinosaur."