IntroductionPreviously, I created and introduced an app that reads QR codes using a PC webcam. As it turns out, there are ...

I have a friend who calls me occasionally to help him with various little things having to do with the technology at his house. This week, one of his requests was to learn more about QR codes and how ...

The humble QR code has been hiding a lot of side hustles.

Continuing the first steps to building apps with Codex I would like to write about the actual workflow. The content we are ...