I do mountain bike trail work and mapping, and I like putting very large QR codes on the trail head sign kiosks with a note saying "Scan this QR code with your

I do mountain bike trail work and mapping, and I like putting very large QR codes on the trail head sign kiosks with a note saying "Scan this QR code with your phone to download a copy of this map.". Year-old example (it's changed slightly since then): https://nuxx.net/gallery/v/travel/local_places/biking/PB150086.jpg.html https://nuxx.net/gallery/v/travel/local_places/biking/PB1500... I don't have anything in place (unique URLs or whatever) to track how often it's done, but I've personally seen a number of people using it just in times that I've been at the park and sitting near the trail head.