All smartphones with their own shell have a QR code scanner, for other users you can download applications from the play market, for example, QR and barcode scanner from Gamma Play, but often you just need to open the native application and read the code, described in more detail here.
QR codes can be found absolutely everywhere: on buses, transport, on advertising banners, business cards, receipts, documents. This encoding is very convenient, since almost any device can be used to read information encrypted in the code.
What do you need to read the code?
Some Android phones already have the app installed by default, while others need to install it from the Play Store.
Which application is the best to install?
Depending on the purpose of the scan:
can be an application, the simplest option. Something like this: https://play.google.com/store/apps/details?id=indie.priloj.com.scanerqr
There are a lot of them, this is just the most convenient thing
Greetings! To scan a QR code on an Android device, you first need to go to the Play Market, download a QR reader (you can choose any program, they all work on a similar principle and have no special differences). After that, allow the application to access the camera and point it to the desired QR code. It will take no more than a few seconds to decrypt the data.
Usually the scanner is embedded in the firmware or embedded in the camera. For example, Xiaomi devices with MIUI have a "Scanner" application, by default it is located in the "Tools" folder, is preinstalled and will not be removed according to the standard procedure. It's very simple to use - turn it on, give permissions and focus on the code. After reading, the program decrypts the encoded text and offers to copy it. Then you can already insert it into Google, notes, etc. By the way, the same program recognizes business cards, text and plants from photos. Almost all smartphone manufacturers have pre-installed counterparts, of course, if the device does not run on pure Android. If you don't have such a program, choose any suitable one from Google Play. Here we compared the most popular scanners https://softcatalog.info/en/android/obzor/skannery-dlya-android
Built-in scanners exist for almost all modern smartphone models; to use the option, you just need to launch the camera and point it at the code to be read.
If nothing happened, then try looking for the function in the camera settings and activate it.
There is a wonderful application "Bixby Camera" for Samsung users.
Here are instructions for different devices, very convenient: https://besprovodnik.ru/kak -skanirovat-qr-kod-na-android /
Depending on the manufacturer, this function may be built into your device by default, usually it is located in the camera section or is present as a separate application. Recently, many software manufacturers have also built this feature into their products, for example, Yandex mobile search. To use the QR code scanner, you need to open the search application and click on the search bar, a keyboard will appear at the bottom of the screen, above which the auxiliary buttons are located, you must click the QR code reader button. Alternatively, you can use a third-party application from the Play Store for example: QR barcode scanner