What is QR Code

Judging from its history, QR developed from a user request. Around the 1960s, in Japan which was experiencing high economic growth had many supermarkets. The cashier is having problems entering goods and prices manually, thus making them in pain every day. At that time, bar codes were found which greatly reduced their burden because they only needed to scan using optical sensors.

The use of barcode is increasingly widespread, unfortunately this one-dimensional code can only hold about 20 alphanumeric characters. This situation makes the barcode does not function optimally. At that time, users contacted Denso Wave Incorporated, which was developing a QR Code system.

Quoted from the official website of Denso, they were able to request to develop a code system that could contain alphabetical, but also Kanji and Kana characters. That’s when Denso Wave began to focus on these expectations.

Masahiro Hara and one of his team members developed a QR code from a barcode that is only 1 direction (horizontal) to 2 directions (horizontal and vertical). They also tried to keep this code readable quickly. Hara got the idea to make a code position marker, which in the end was in the form of 3 boxes on the edge of the QR code. The marker makes the QR code can be scanned from various sides without errors.

One and a half years Hara developed the QR code project with countless trials and errors. Finally, QR codes are created with a very high capacity with various types of data ranging from numerical, alphabetical, starch, kana, hiragana, symbols, to binary codes. QR codes are able to store up to 7,089 numeric characters, 4,296 alphanumeric characters, 2,844 bytes binary codes, and 1,817 kanji characters. Not only does it contain a lot of characters, QR codes are read quickly, even 10 times faster than other code systems.

In 1994, Denso Wave released a QR code to the public. This code is then used by the automotive industry, from communication systems to shipping efficiency and transaction slips. Since then QR codes have increasingly been used in the Japanese industry.

Another factor that made QR widely accepted by the public was that Denso Wave provided the QR code specifications for the public. So anyone can use the QR code freely and for free. The developer wants this code to be useful for as many people as possible.

In the new millennium, precisely 2002, the use of QR codes is increasingly widespread in Japanese society. This is because there are many mobile phones that feature QR code readers. This capability allows people to access websites and get coupons by scanning the strange looking pattern. Its ease of making QR codes is increasingly popular.

Now QR codes have become one of the indispensable tools for many people’s businesses and lives. Starting to make business cards that store a lot of data, to electronic tickets and flight ticket systems that are implemented at all airports.

QR Code or commonly known as QR Code is a form of evolution of barcode from one dimension to two dimensions. The use of QR codes is very common in Japan. This is because of its ability to store data that is larger than the barcode so that it can encode information in Japanese because it can accommodate kanji. The QR code has obtained international standardization and standardization from Japan in the form of ISO / IEC18004 and JIS-X-0510 and has been widely used through mobile phones in Japan.

QR code is a type of matrix code or two-dimensional barcode that was developed by Denso Wave, a division of Denso Corporation which is a Japanese company and was published in 1994 with the main functionality of being easily read by QR scanners, which stands for quick response. fast, which in accordance with its purpose is to convey information quickly and get a fast response too. Unlike barcodes, which only store information horizontally, QR codes are able to store information horizontally and vertically, therefore QR codes can automatically hold more information than barcodes (barcodes).

Initially QR codes were used for tracking vehicle parts in manufacturing, but now QR codes are used in a broader context, including commercial applications and ease of tracking oriented applications aimed at cellular phone users. In Japan, the use of QR codes is very popular, almost all types of cellphones in Japan can read QR codes because most entrepreneurs there have chosen QR codes as an additional tool in their product promotion programs, both those engaged in trade and in services. In general, QR codes are used to embed company website address information. In Indonesia, the QR code was first introduced by KOMPAS. With the QR code on the daily newspaper in Indonesia, the reader is able to access the news through his cell phone can even provide input or opinion to the newspaper’s reporter or editor.

Keep Growing

QR code as an open code that can be freely used by everyone, not only used in Japan, but all over the world. QR codes have been certified by various authorities to be used globally.

In 1997, QR was approved for use as an automatic identification in the Industry by AIM (Automatic Identification Manufacturer). Two years later, QR codes are standardized by the Japan Industrial Standards for 2-dimensional codes. A year passed, in 2000 the QR code got the ISO standard so it could be used throughout the world.

Denso Wave is also not complacent as long as the QR code spreads throughout the world. They continue to develop new types of QR codes to meet more complex needs. Denso created Micro QR Code to display a small code and only 35 characters. For greater use, Denso created the iQR Code which can hold a maximum of up to 40,000 characters, almost 6 times the capacity of ordinary QR.

They also created SQRC which made the QR code have a security function in the form of access restrictions. Users can use it for information that is private or confidential. In supporting promotional activities and forms of creativity, QR frames are created that allow one to insert certain images or shapes in a QR box without disturbing the stored data.


QR codes function like physical hyperlinks that can store addresses and URLs, telephone numbers, text and sms that can be used in magazines, daily letters, advertisements, on bus signs, business cards or other media. Or in other words, as a quick link between online content and offline content. The presence of this code allows the audience to interact with the media that is stuck on the cellphone effectively and efficiently. Users can also generate and print their own QR codes for others by visiting one of several QR code encyclopedias.

For Commerce

In addition, the QR design allows users to insert company logos, video clips or photos into the QR code, without removing any substantial information from the source entered. An example of using a QR code that contains video clip content is the QR code used by a group of singers from the UK called Pet Shop Boys in 2007. When the code is scanned correctly, users will be directed to the Pet Shop Boys site. Also in 2009 the QR code was used for the Movie 9 marketing campaign at San Diego Comic Con. At that time, customers are given a card that displays a QR code that has been integrated with the relevant artwork. So, customers can access movie footage through the QR code.

Publice Used

QR codes can be used as food safety by adding QR codes that contain data about nutritional content and expiration times on each food label so that customers can feel safer in choosing food purchased because they can find out information about the food. In Japan, this has been implemented by McDonald’s. There are 19 types of “sandwiches” that are given a QR code that contains information on allergies, the number of calories and nutrients contained in the sandwich. In addition, a QR code can also be given at the bus stop, so that passengers can find out the whereabouts of the bus that is waiting. The way it works is by providing hyperlinks to CCTV cameras on each road through an internet connection on the cellphone. Furthermore, a QR code can be installed on the student card, so that it will simplify the student attendance process, and facilitate access for students, teachers, and parents of students to the learning process.

How Its Work?

QR codes can be used on mobile phones that have QR code reader applications and have GPRS or WiFi or 3G internet access to connect the phone to the destination site via the QR code. Customers, who in this case are mobile users only need to activate the QR code reader program, point the camera at the QR code, then the QR code reader program will automatically scan data that has been embedded in the QR code. If the QR code contains the address of a site, then the customer can directly access the site without first having to type the address of the destination site. If you want to access the QR code with a cellphone without a camera, then the first thing the user must do is to first run the browser application on the phone, then enter the URL of the page in question, then enter the “ID” or 7 digit number listed below code and click the Go button, then the user will get the desired digital content. This certainly makes it easier for customers to get information offered by business owners. Types of applications that can read QR codes include Kaywa Reader, which can be installed on Nokia phones, iMatrix, applications for iPhone and ZXing Decoder Online that can be used to decode QR codes in the form of images by entering image URLs or by uploading them.

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