I assume someone uses QR codes, but I don't know who, and I don't see why they are popping up in so many places.
They live in Japan. QRs are very old news there. I couldn't really tell more (I've never been to Japan) but this must be it. Anyone with ground level expertise?
I can confirm this, they are everywhere and people seem to like them.
Eg, I was handed a flyer for a random nightclub with a QR code on it for cheap entry. You just scanned the QR code then showed your mobile at the door for a discount. This was 5 years ago too (Tokyo, Shinjuku/Shibuya).
They live in Japan. QRs are very old news there. I couldn't really tell more (I've never been to Japan) but this must be it. Anyone with ground level expertise?