What does QR code mean?

What is a QR code?

The QR code, short for ‘Quick Response Code’, is a two-dimensional barcode invented in 1994 by the Japanese company Denso Wave. It is designed to be scanned by a smartphone camera to quickly relay information. Unlike a traditional UPC barcode, a QR code can store a significantly larger amount of information, including text, URL links, geo-coordinates and much more. QR codes can be recognised by their square shape and the small black squares on a white background. The popularity of QR codes has exploded with the development of smartphones, providing a quick and easy way to access content on the internet without having to type in long URLs.

Applications of QR codes

QR codes have found applications in many different areas from advertising to event management and consumer products. They are particularly useful in marketing, where companies encode links to their website or special promotions and then print them on everything from business cards to large billboards. In retail, customers can scan a QR code to get more information about a product or even make a purchase directly through their mobile phone. In the tourism industry, QR codes are used on information signs, in museums and at tourist attractions so visitors can quickly learn more about the attraction. With the recent rise of contactless communication during the COVID-19 pandemic, QR codes have also played an important role in promoting safety by providing digital menus in restaurants and secure check-in at events.

How do QR codes work?

Creating and encoding QR codes

The process for creating a QR code is relatively simple. You select the information you want to share, such as a web address, SMS message or vCard (contact information) and use a QR code generator to turn this data into a QR code. The generator uses an algorithm to transform the information into a visual code that can then be read by a QR code scanner app. QR codes can be codified in different formats, with error correction levels that allow the codes to be read even if they are damaged or partially hidden.

Scanning and reading QR codes

When a user scans a QR code with a smartphone, the app reads the visual information and converts it into digital data. This could be, for example, opening a URL in a web browser or display a text message on the user's screen. Several smartphones today have in-built features to read QR codes without the need for a separate app, making the process even more accessible and widespread. Sensitive data such as payment information can also be encoded and transmitted securely via encrypted QR codes, increasing their usefulness in the financial sector and mobile payment systems.

QR codes in marketing

For marketing professionals, QR codes have become an invaluable tool because they enable unrivalled engagement with the consumer. QR code campaigns can track user behaviour and gather data that can be used to measure the effectiveness of an advertisement or marketing strategy. For example, if a potential customer scans a QR code from a magazine, the company can track which magazine the code was scanned from, what time of day and even the exact location. This kind of targeted data gives the business insight into the consumer journey and can help adapt future marketing efforts to optimise conversion rates.

Benefits of QR codes

QR codes offer a number of benefits in both personal and business contexts. They are cost-effective and easy to produce, making them ideal for small businesses and start-ups. QR codes can be incorporated on almost any kind of material, including printed matter, displays, and even on the products themselves. They allow users to access information quickly and easily, without having to type in complex URLs or fill out long forms. For businesses, a clear advantage is that QR codes can be updated digitally without having to reprint the material. This makes it possible to keep campaigns up-to-date and relevant at no extra cost. They also enhance the user experience by offering an interactive approach that engages customers in an innovative way.

QR codes in Denmark

In Denmark, the use of QR codes has become increasingly common, especially with the introduction of the national digital ID, MitID, where you use a QR code to identify yourself online. Many Danish companies have also embraced the use of QR codes in their marketing strategies. This has proved particularly useful during the pandemic, where the contactless nature of QR codes has allowed businesses to continue engaging with customers in a secure way. Consumers in Denmark have quickly adapted to this technology, creating new opportunities for businesses to create innovative campaigns and improve the customer experience.