After seeing a Mastodon post about slightly messy QR codes recently, and another post pointing to a tutorial for how to read QR codes without a computer a while before that, I started messing around a bit with QR codes, and eventually ended up wondering if there are ways to make QR codes that scan with multiple different results, maybe exploiting the different quirks of different scanners or using camera tricks. It feels like something that somebody at some point would have tried.