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 ...

QR (Quick Response) codes are everywhere these days. You'll spot them on restaurant menus, business cards, product packages, and even concert tickets. A big reason they've caught on is convenience.

Speed is essential to a well-managed recall. The faster consumers are alerted and understand what to do, the faster contaminated products can be identified, returned, or discarded. That’s why QR codes ...

While QR code menus were introduced as a convenient, contactless solution, growing numbers of customers say they create frustration and disrupt the dining experience.