Introduction and Application of Various Types of QR Codes

The QR code, known as the Quick Response code, is a type of two-dimensional code developed by Masahiro Hara from Denso Wave, Inc. in 1994, introduced as a modern alternative to traditional one-dimensional codes. With advantages in scanning speed and the volume of information stored compared to classic barcodes, QR codes quickly gained market popularity thanks to the capabilities of two-dimensional encoding. Today, QR codes are widely used in various fields, including product management, healthcare, education, and business. Additionally, we will not forget the possibility of creating an electronic business card with a QR code.

Diversity of QR Code Formats

Denso Wave did not stop at one QR code model, developing many variations. There are different types of QR codes, each differing in data capacity, size, and error correction ability, which defines their specific application areas.

Models QR Code 1 and 2

QR codes are a common sight in marketing, on television, on the internet, and many other places. Model 1, as the original version, laid the foundation for the development of subsequent models and is characterized by a smaller capacity compared to model 2. Model 1 can store up to 1167 numerical, 707 alphanumeric characters, and 299 Kanji characters. Model 2, offering enhanced features, can accommodate up to 7089 numerical characters, 4296 alphanumeric, 2953 binary bytes, and 1817 Kanji characters, and is also better scanned thanks to additional alignment elements.

Micro QR Code

This type is a reduced version of the standard QR code and stores less data. Despite its compact size, the micro QR code can contain Kanji, 8-bit symbols, alphanumeric and special characters, often used in small-scale production and for marking small-sized goods.

rMQR Code

The rectangular micro QR code is a rectangular version of the micro QR code, providing space savings thanks to its narrow form. Despite its compact size, the rMQR can store up to 219 alphanumeric, 361 numerical characters, and 92 Kanji characters, finding application for marking and inventorying goods.

SQRC

The QR code with a secrecy function contains both public and private information, access to which is possible only with the use of a specialized scanner. This allows for the protection of sensitive data from unauthorized access.

Framed QR Code

This type of QR code offers the possibility of embedding an image or company logo in the center, allowing for customization of the appearance of the code to enhance its attractiveness and recognizability.

In addition to the mentioned types of QR codes, there are other formats of two-dimensional barcodes, such as Data Matrix, MaxiCode, DotCode, PDF417, and Han Xin, each with its unique features and application areas, differing in structure, capacity, and scanning methods.