While not revolutionary, QR codes have subtly integrated into our daily routines, often without us even realizing it. They are particularly prevalent in restaurants where I live. Instead of a traditional menu, you’re often presented with a QR code. Once scanned with your phone, it directs you to the restaurant’s website, where you can view the menu, daily specials, seasonal offerings, and up-to-date prices. This eliminates the need for constantly updating printed menus.
In this article, I delve into the technical aspects of QR codes. I briefly cover what they are and their history, but the main focus will be on understanding the meaning behind those little dots. We’ll explore questions like: Is there a specific format? How are they created? Do different sections of the square contain different information? Is there any error correction? So, if you’re curious to learn more, let’s dive in.