QR Code

From ElateWiki



About QR Code

QR Code was developed by the Japanese company Denso Wave Inc. in 1994. It has become a widely used tool in our business and personal life due to its high capability and usability compared to traditional barcodes. In concrete, conventional barcodes are able to encode about 20 digits, but a QR code symbol has the capability of handling up to 7,089 characters. At the same time, QR codes can be read 10 times faster than other codes. With technology progress, QR Code is now also available in a smaller size as Micro QR Code. Besides numbers and the Latin alphabet, the QR Code symbol is also able to handle Kanji, Kana, Hiragana, binary and control codes.


Indeed, QR Code has an outstanding error correction capability that is able to restore 30% of the code words at maximum. A QR Code can be read from 360° which is enabled by the position detection patterns at the three corners of the symbol. The high-speed reading is protected against potential interference of backgrounds. In case of a restricted size of printing area, QR Code can be divided into several smaller data symbols that contain exactly the same information.


During the 1960s, a lot of new commodity goods required employees of supermarkets and stores to key in prices manually. It caused many cashiers suffering from wrist and carpal tunnel syndromes. In order to solve this problem, the point of sale (POS) system was developed that allowed cashiers to scan the barcode of sold items.

After barcodes had become more popular, users asked Denso to develop a code capable of more than 20 alphanumeric characters, as well as Kanji and Kana. In response, QR Code was brought to market. While conventional barcodes are only coded in one direction, QR Code has information coded in two directions: across and up/down. The initial version was further improved by adding the positional patterns at the three corners of the symbol.

QR Code has become a common tool at work and private places. Its high functionality and convenience have been valued by a Good Design Award in 2012, and sponsored by the Japan Institute of Design Promotion. QR Code also holds a patent from the European Patent Office since 1995.

Corporate and Personal Uses

In business, QR Code can be used for various purposes such as for manufacturing, warehouse, retail sales, medical and services.

Production Management

QR Codes are used for a wide range of procedures in production, including picking up parts to assemble, storing finished products and shipping them to customers. QR Codes especially find use in manufacturing chains of food industries, where they help to enhance the traceability of products, for example, production date, product origin and weight.

Process Management

Before production, the instruction of operations is read in as a QR Code. The retrieved information is sent to a production process server in real-time which allows a centralized progress monitoring.

Retail Sales


When a customer asks for a product which is currently sold out in the store, the salesperson no longer needs to run to the warehouse to check its availability and to order it on a computer. Customers can simply scan the assigned QR Code of the product which carries out a query in the inventory database. The handy terminal provides information about the availability and the expected arrival date of a potential order.

Medical Use

In pharmacy, QR Codes help to speed up the access to personal health data by medicine components encoded and printed on the medicine bottle. Gathering this information by scanning this code can prevent mistakes in preparing a medicine.

Personal Use

QR Codes are used at many different places in our everyday lives. For example, the most known purposes are, for example, to open an URL, to retrieve information about monuments, exhibition and museum items, as well as to enter an event.

Similarly, QR Code has been used to handle mobile payments by a number of e-commerce giants such as Amazon, Alibaba and Paypal. With the development of Near Field Communication, wireless payment has been frequently compared to mobile payments based on QR Code. Although wireless payment is faster, QR Code ensures a safer transmission of information due to encrypted card information. In addition, the use of QR Code payment remains unaffected by the brand of mobile devices. Customers have reported a positive feedback to the QR Code-based app Walmart Pay in 4,600 US stores since June 2016.

The following video demonstrates how a mobile payment works with a QR Code.

Mercedes-Benz Rescue Assist is also supported by QR Code. It helps rescue teams to identify the location of airbags, batteries and other structural elements within few seconds.

How to Use QR Code?

Many QR Code readers can be downloaded in App Store and Google Play Store for mobile devices for free. Some websites offer QR scanners for computers through webcam or from documents and images on screen. The generation of QR Codes has also become cost-free and convenient on the Internet which creates a new marketing opportunity for small businesses.

QR Code reader in App Store:



In various professional areas such as manufacturing, logistics and retail, QR Code has contributed to the overall effectiveness and efficiency. QR Codes have improved the general productivity on the supplying side and user's experience on the demanding side. In spite of more recent technologies, the use of QR Codes continues growing worldwide.

See Also

CodeTwo QR Code Desktop Reader: https://www.codetwo.de/freeware/qr-code-desktop-reader/

More descriptions about functions in manufacturing: http://www.qrcode.com/en/history/

Market research on QR Code: https://www.youtube.com/watch?v=f0o6_ZwHAPw

QR Code Generator: http://www.qr-code-generator.com/

Scan QR Code through webcam: https://www.the-qrcode-generator.com/scan


ASEAN Today: https://www.aseantoday.com/2016/06/qr-codes-the-best-of-mobile-app-payments/.

Denso Wave Inc. Website: http://www.qrcode.com/en/.

European Patent Office: https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=EP&NR=0672994A1&KC=A1&FT=D&ND=3&date=19950920&DB=EPODOC&locale=en_EP.

Mercedes-Benz USA: https://www.mbusa.com/mercedes/service_and_parts/rescue_assist.

PaymentsSource: https://www.paymentssource.com/news/why-mobile-wallets-still-use-qr-codesand-why-maybe-they-shouldnt

QR Codes in Marketing: http://www.qrcodesinmarketing.net/history-of-qr-codes.html

QR Code Wikipedia: https://de.wikipedia.org/wiki/QR-Code