How to program a QR code?

What is a QR code format?

Denso Wave, a Japanese automotive giant, invented a two-dimensional code for high-speed reading in 1994. Over the years, it has seen widespread use owing to its reliability. The data that is encoded as a QR Code program is covered through several standards. For example, it registered for AIM (Association for Automatic Identification and Mobility) International in October 1997, International Organisation for Standardisation (ISO)/IEC in June 2000, etc.

A QR code contains an arrangement of black and white modules (the tiniest element of the code is a module), patterns to detect position, and timing, format material. That contains error correction level and mask numbers, error correction code, and data area. QR codes are categorized into Model 1, Model 2, and Micro QR. They have diverse features and data volumes.

What is a QR code pattern?

To the naked eyes, a QR Code may look like a squared block with black and white patterns. However, these blacks and whites contain far more data than one can imagine. The squared block contains positioning markings, timing patterns, alignment markings, format information, version information, data and error correction keys, and quiet zone.

QR Code process involves using dozens of available programming languages like PHP, Python, JavaScript, Java, and others to create a QR Code.

What is QR code programming?

There are a wide variety of ways to create a QR Code. An online tool like QRTiger, which is free, or Kaywa, which is a paid version, can be used to create the QR Code online. These allow users to create their desired codes using logos, color, and design. Moreover, there are many apps available in the App Store (iOS) and Play Store (Android). That allows the users to do the same thing. Given that smartphone usage has skyrocketed, it is safe to say most users will prefer to use an app instead of an online tool. However, there are people like developers and programmers who enjoy creating QR Codes from scratch. So those who do not prefer the easy method and have special requirements. They can try using programming languages to create such codes.

QR Code programming involves using one of the dozens of available programming languages to create a QR Code. Although it is a challenging route for beginners, it is a piece of cake for learned programmers.

How to program a QR code?

There are dozens of programming languages available in the industry today. For example, Python, Java, C Language, JavaScript, PHP, C++, C#, HTML, PHP, etc. So I have chosen Python to give a brief explanation of how to create a QR Code using a programming language.

First, you need to set up a virtual environment and install the Python packages called “python-QRcode”, and “opencv-python”. If you know how to work around Python, the installation process is pretty simple. But, make sure you install the latest available versions of both packages.

Second, you need to make the declaration of import at the top of your Python file. And, then use the “make ()” function to generate a basic QR Code on your input text. However, for advanced usage, you can exploit the “QRCode” class, which will give you access to further control and properties, such as – versions, box sizes, borders, and error correction. On a side note, make sure you use one of the error corrections constant to improve the detection capabilities.

Third, after writing all the required scripts, use the “add_data” function and enter the text of your choice. Once that is done, save the file as an image. Now, you will be able to see your QR Code created using the programming language called Python. For beginners and newbies, it is not as easy as I have made it sound. So, unless you are an avid programmer, my suggestion would be to use an available tool or app to create your QR Code.