What is a QR code and how does it work?

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What is a QR code and how does it work?


You may have heard the name QR Code. A lot of information is hidden in a small code that cannot be clearly seen. The link to download the app can also be obtained with the help of this code.

In addition, QR codes are being used for digital payments. QR codes are now being used for many purposes in many works.

There are many things hidden inside this QR code. On the outer shell of a product, QR codes are also used to download apps, digital payments, and personal details. 

You may think this QR code is not easy to use. But this is not happening. It is also very easy to make. 

Do a Google search for the QR code and you will find it on a variety of websites. QR codes can be generated from these websites. 

All details can be saved in QR code. Displays an image after the QR code has been generated. Scanning that image shows all the details in the QR code. 

There are also various apps for scanning and generating QR codes. The QR code can contain different details for different tasks. 

What is QR code?

The full form of QR code is Quick Response Code. This code can be easily read by mobile phones. Spacing is created using matrix barcodes. 

How much information can be retrieved once the QR code is scanned?

It can be used in large industries, large businesses, retail stores and many other places. The QR code can store 7,089 digits and 4,296 characters, including punctuation marks and special characters.

Even if the QR code is damaged, the structure of the QR code includes its copies in the data keys. As a result, 30 percent of the code structure is not damaged without affecting the readability of the scanners. 

Who created the QR code?  

Point-of-sale technology was developed as supermarkets became more crowded and lined up. 

This was a very early version of the barcode. Even so, the supermarkets did not solve the problem.

Because in the early version, only one-way coding was allowed. Similarly, a barcode could only store 20 alphanumeric characters of information. 

The detailed QR code is developed by DEANSO Web Inc. It was specially developed by Masahiro Hara, the company’s chief developer.

The supermarkets contacted DEANSO Web Inc. after finding out the limit of the barcode. Hara converted the barcode from Unidirectional to 2D code. 

Due to this, it was possible to keep more information in the barcode. Hara decided to square the size of the QR code because it was found to be an easily detectable shape. 

Squares also helped to encode information both horizontally and vertically. When placed in a square, QR code information can be read 10 times faster than barcode. 

All of these investigations were made public by DEANSO Web Inc. in 1994 without patent rights. Since then, the number of QR code users has been increasing exponentially. 

How does QR code work?

A. Structure of QR

codes : Current QR codes consist of seven parts. Each part forms a ray pixel pattern. Which makes it look like a puzzle. 

Each element in it has a specific purpose that conveys certain information through code. Such as print direction, timing, error tolerance, and spaces that help to differentiate the code. 

How to scan QR code? 

Most of the current QR codes are scanned with the help of smartphones. There are free apps for scanning QR scanning on both Android and iOS. 

Most apps have the option to easily open the app and scan the QR code in one click. 

How many QR codes are used in Nepal?

Most of the ‘A’ class banks in Nepal have already started using QR codes. From the development bank, QR code has also started to be used in transport and shops. Its use is increasing outside Kathmandu as well. 

For example, Bank of Kathmandu has been providing QR code service to buses of various companies in Eastern Nepal from around Amuwa Bazaar in Rupandehi. 

He started using QR codes to collect fares on 22 buses operated by Eastern Nepal Transport, Kankai Mai Pathibhara Transport and Super Janasewa Transport. 

Sunrise Bank has also provided Safa Tempo in Trinagar Krishi Haat Bazaar, Dhangadhi, Kailali, Prabhu Bank in Upatyaka, Prabhu Bank and Idea Studio Nepal in Kathmandu. 

These are just a few examples. The country’s digital payments are on the rise. According to the data released by Nepal Rastra Bank for the first nine months of the current fiscal year, Rs 2.72 billion has been paid in April.

This is Rs 667 million more than the previous month. The turnover was Rs 2.55 billion in March. There has also been a significant increase in the number of payments this month. 

There have been 635,738 electronic transactions in April. In the previous month, 535,790 electronic transactions had taken place. In the first month of the current fiscal year, Rs. 58.90 million was paid. 

The payment from mobile wallet in nine months has been Rs 11.21 billion. The QR code is helping Nepal move towards the digital age. This will make it easier to create a less cash society. 

Digital payments, such as QR codes, have been instrumental in maintaining social distance during this epidemic. 

credit: sneha

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