This is way more expensive than QR codes (which is more or less free). Each tech has pros and cons. When talking about QR codes, I guarantee price will be at

This is way more expensive than QR codes (which is more or less free). Each tech has pros and cons. When talking about QR codes, I guarantee price will be at the forefront. I'm not sure this is anything more than trying to invent a problem to solve with a novel product.