What is a QR code and how do I scan it?

what is qr code and how to scan it

Everyone knows the characteristic, rectangular, black and white codes that can be scanned with a mobile phone. They are found everywhere - on websites, flyers, business cards and even bus stops. QR codes, as their name sounds, quickly became popular in various mass media. In this article, we will show you how to scan the QR code and present a handful of the most important information about it.

What is a QR code?

Quick response codes (QR code is an abbreviation) are barcodes presented in two-dimensional form. They allow you to quickly transfer to an external website, application, or run another function of the device.

Advantages of using QR codes

The main advantage of QR codes is their capacity - they allow for the encoding of much more information than any other bar code. You can also scan QR codes from digital screens, and not only from paper, as is the case with other barcodes.

QR code generator as a convenient tool

It is very nice that QR codes can be easily "produced" by yourself. There is a wide selection of completely free QR code generators that will quickly create a code specially designed for you.

How to scan the QR code?

To scan the QR code with your mobile phone, you will have to use specially designed applications for this. Depending on the model of the device and its degree of modernization, this application may take various forms.

How to scan the QR code - Built-in application

In younger date mobile phones, the QR code scanning applications are pre-installed. This means that you will not have to download them separately, as they are already on the phone at the time of purchase.

Scanning the QR code is done by launching the appropriate application, usually named "Scanner" in the "Tools" folder. Your screen should display a simple manual for the scanner and a marked area where QR codes should be placed.

In the latest models of mobile phones, the QR code can be scanned using the built-in camera - in such cases, it often happens that the camera automatically recognizes the QR code visible in the lens, and changes the photo mode to scanner.

How to scan the QR code - External applications for older phone models

If, on the other hand, you have a mobile phone that is already several years old, then it is possible that there is no app pre-installed on it to scan the QR code.

In this case, you will have to download an external application, for example with Google Play Store. Find any program called "QR Scanner" or similar and download it. However, make sure in advance whether this application has positive opinions from other users.

QR codes are not working on my phone. What could be the cause?

It is very rare for a technical fault to occur in the form of the inability to identify QR codes by phone. Much more often problems with the scanner are caused by a damaged camera lens or its improper use. Therefore, we decided to list the most important factors that may adversely affect the operation of your scanner.

Incorrect distance

Make sure that your mobile phone is in a distance of 20 to 40 cm from the scanned code. When you keep the right distance, slowly move the camera closer to the QR code - it will help in catching the proper focus of the image.

Bad angle

In addition to making sure the QR code is clear to your device, also check that it is not under a too steep slope. Very often it turns out that too large an angle is the reason why the device cannot read the qr code.

Inadequate light

Poor lighting and a strong shadow on the QR code greatly affect your phone's readability. Therefore, you need to ensure that the code is properly illuminated and the background is uniform, as too many elements visible in the lens may cause a QR reading incorrectly.

Scanning the QR code without secrets

As you can see, scanning a QR code is not a difficult task. All you need is the right application and basic knowledge of how to use it properly. After reading this article, you certainly know what the qr code is and why you should use it.


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