QR codes are everywhere – so why haven't we run out yet?

QR codes have become ubiquitous short cuts for everything from account log-ins to restaurant menus, but are we at risk of ...
Hackaday

QR codes

Adding a camera to a project used to be a chore, but modern camera modules make it simple. But what if you want to read QR codes? [James Bowman] noticed a $7 module that claims to read QR codes so he ...