What is a QR code and how does it work?

Many users consider QR code as a trend or an annoying feature. But this technology, which is more than 25 years old, is much more useful and practical than it seems. Next, we will discuss the nature of the QR code and its various uses.

BingMag.com What is a QR code and how does it work?

Many users consider QR code as a trend or an annoying feature. But this technology, which is more than 25 years old, is much more useful and practical than it seems. Next, we will discuss the nature of the QR code and its various uses.

What is the QR code?

QR code or the same term QR Code is a modern adaptation of standard UPC barcodes. Simply put, it is a machine-readable label that a computer or phone can interpret faster than simple text or code.

Typical UPC barcodes only contain twelve numbers, which may be related to a food item or anything. be another But a QR code can store much more data. For example, in these codes you can put from the website address to the number of car parts and other complex information.

But most of the time, QR codes are used as shortcuts for websites or apps. For example, maybe a restaurant or coffee shop uses a QR code to show its online menu, and maybe a clinic asks patients to fill out the desired online form by scanning the QR code.

How does a QR code work?

BingMag.com What is a QR code and how does it work?

To us, a QR code looks like a bunch of random pixels. But the design of these codes is creative and innovative because thanks to this design, a lot of data is placed in a limited space. First, you should pay attention to the three large squares located in the corners of a QR code. Computers use these squares to determine the direction of the code. So even if you scan the code in reverse, the device in question will easily recognize the direction of the code.

Pixels that are directly outside these squares are the version number of the QR code and most importantly its "format". show For example, if you create a QR code for a Wi-Fi password, it will use the formatting to provide the username and password of the Internet connection network.

And finally, we should mention the rest of the pixels. Some of these pixels are for error correction and "timing patterns" that increase the readability of the QR code. But the bulk of these pixels provide raw data. This data is scanned both horizontally and vertically, which increases the density of the data placed on the QR code. While conventional barcodes are only scanned in one direction.

Although you can scan these codes without using devices, considering that all phones currently use such a feature. , it is not wise to do such a thing at all and you are just wasting your time.

All phones use QR code scanner>

BingMag.com What is a QR code and how does it work?

For years, new versions of Android and iOS have supported QR code scanning. This means that you can do this without the need to use different applications and only by using the camera application on your phone. Also, your phone supports the ability to scan QR codes in the images stored in the phone. In iOS, first open the Photos app and after opening the desired image, hold your finger on the QR code until a menu appears according to the content of the desired code. If, for example, the desired code contains the site address, you will come across an option such as open this URL.

In Android, to use this feature, you must use Google Lens or Google Photos. In Google Lens, just open the desired photo and the QR code in it will be scanned automatically. But in Google Photos, after opening the photo, you should tap on the three-dot icon on the right side of the upper part and select the search option.

Of course, you should not scan anything. Sometimes scammers use these codes to redirect people to malicious sites or unsecured networks. But always after scanning, the phone will display the content of the code and ask you if you want to continue or not.

How to scan QR code for free> make?

BingMag.com What is a QR code and how does it work?

There are many tools for creating QR codes that You can take advantage of them. Considering that most QR codes are used to connect to Wi-Fi and provide website addresses, you can do such things without using different tools.

In Chrome and Microsoft Edge browsers after opening the site You can click on the share button (in the form of a square containing an arrow in the toolbar) and then select the Create QR Code option. To do this in Safari and Firefox, you can use various plugins.

Also, if you want to know the WiFi network password Share with others, you can easily do this by visiting the Wi-Fi settings section of your phone. This means that the other party no longer needs to enter the password manually and just scans the QR code.

We should note that the content inside the QR code is fixed and therefore you cannot update or change it. In the meantime, some services offer dynamic QR codes that link to modifiable links in plain language. These services are usually paid, but they are effective for some tasks.

  • Introducing the easiest and best ways to make QR code

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