The sign on the post at the pizza joint in Detroit had just one word on it, "Dog," and a QR code. My first reaction − and unfortunately this is how it goes when you write a little too much about fraud ...

NORFOLK, Va. - Quick Response (QR) codes are everywhere these days because they're an easy, contactless way to read a menu or download an app. While square barcodes can be convenient, they can also be ...