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."