QR codes also happen to be a fantastic way for devices to communicate when their primary peripherals happen to be cameras and screens. Both are now nearly ubiqu

QR codes also happen to be a fantastic way for devices to communicate when their primary peripherals happen to be cameras and screens. Both are now nearly ubiquitous on all phones and increasing in quality at a ridiculous rate. I do not want to do a pairing dance to send you a link on my phone. Point a camera at a screen with a QR code, bam. QR codes or something like them is a key step in augmented reality based on machine vision. May as well stick with what we've got(1). It seems to work. (1) Unless its covered by a bunch of brain-dead "gif"-like patents in which case I suggest a grid of Pink Hearts, Yellow Moons, Orange Stars, Green Clovers, and Blue Diamonds. I've heard there's prior art for that scheme.