How do QR codes work? Everything you wanted to know

Bring meaning to those confusing dots.

How do QR codes work? Everything you wanted to know

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.