[jhowison]

My iPhone 12 pro Max, with the latest iOS, picked up all four. The first three fairly easily, the last one I had to keep moving the phone in and out before it showed. That said, none of them kept the link constantly and it was a bit tricky to hold it still enough once it found the link to tap it. (The link was to a YouTube video about QR image codes..)

[nsxwolf]

My iPhone Xs eventually got the green guy to recognize, but not the Pikachu or the little RPG guy or the whatever the other thing is.

This would be a really cool idea if it could be made to work reliably. I like how Twitter did it, they put your avatar in a small circle in the center. That seems to work.