Cell phone drawn. Camera on. And the QR code is scanned. Since the Corona crisis of the last 2 years at the latest, every child probably knows this square code. They really did hang almost everywhere. But what can these characters actually do?
As Aristotle already said, "The beginning is half of the whole." So let's first take a brief look at the history of the QR code. Developed in the early 1990s, the QR code was intended to serve as a marker for certain parts and components of an automotive supplier. As the name QR (meaning Quick Response) already reveals, the idea is to be able to access digital data as quickly as possible. To do this, the relevant data is first converted into a binary code and then output as specially arranged white and black squares. The typical QR code, as we all know it. The three larger squares on the outside indicate the orientation of the code. This means that it can be read optimally from any angle.