Qr code recognition on Samsung. Service codes and key combinations for Samsung Galaxy smartphones

Service tools become useful in cases where the user needs to access certain functions that are not available in normal mode. By and large, they were invented to test the operation of the device, but we can also use them to call up various menus.

Advanced users deal with them all the time. For example, on some Galaxy devices you can adjust the sound volume, find out hidden information about your phone, and much more. Now we will analyze the most useful service codes that are suitable for users of Samsung smartphones and tablets.

How to enter the service code?

Everything is very simple. Open the dialer and enter numbers with signs that correspond to the menu you want to execute. After entering the last character, the menu should automatically launch; no additional actions need to be performed.

Denial of responsibility: this information is intended experienced users. You should not try to change anything in the settings if you are not familiar with mobile devices. We are not responsible for any subsequent problems, including loss of data or damage to hardware.

All service codes for Samsung Galaxy smartphones and tablets

I repeat that you should not touch those parameters whose meaning you do not know. You risk losing the functionality of your phone or valuable data.

Useful keyboard shortcuts for Samsung Galaxy

• Enter recovery: with the phone turned off, press the volume up, home and power buttons
• Bootloader/fastboot mode: you also need to turn off the phone, and then hold down the volume down, Home and power buttons
• Take a screenshot: on the desired screen, press the volume up, power and, of course, the Home button.
• Force the phone to switch to off state: simultaneously hold down the volume down and power buttons

We hope these system codes and key combinations will be useful to you, but, as for the 100th time, we want to warn you that you should use them with double caution.

Scanning QR codes on Android smartphones is easier than taking photos. All you need is:

• Smartphone or tablet with camera;
• Internet.

I will explain everything as simply as possible and conduct a practical lesson. Right here, without departing from the article. You can also scan barcodes using the same instructions.

“The interface of my smartphone may differ from yours due to a different theme and version of Android. Differences do not affect the installation and use of the QR code scanner.”

First you need a QR code scanner. I found the simplest one. It has fewer annoying ads and scans what you need. Installing it is very simple. It's even easier to use.

1. First, go to Google Play Market. And write in the line underlined in red: “qr code scanner”, or better yet “smart qr scanner and generator”. We click on the search icon or simply the dropped offer that suits us.

In addition, here you can download another great app for scanning –

How to scan a code from a saved image?

You can also recognize a QR code from a picture on the Internet using special websites. I chose qrrd.ru because it was the only site that loaded for me in less than 10 seconds and had a more or less visually pleasing interface.

How to use it? First, go to the website: qrrd.ru or directly to qrrd.ru/read. We see the following:

Circled in green is the site's menu, which lists everything it can do to help you. In our case, select “Recognize QR code”.

The following page opens with a large button “+Select files”. We click on it. After this, options for “select files” appear below. Here you can either immediately take a photo and send it. Or click on documents and select a photo that is already on your phone. I took the latter route.

Here I selected the tab with pictures, clicked on the folder where the pictures are stored on my phone and clicked on the image with the QR code, the same one that was already here in the article.

Then it’s up to the site. It automatically uploads a photo or image to itself, and then immediately recognizes and shows the result.

Ready!.

Why do I even need to scan QR codes?

They may contain useful information. The likelihood of this is low, but it could be there. Additionally, QR codes are often used in museums to avoid putting up huge signs with a ton of information, but just use a small QR code and give everyone the opportunity to stand back and read about the exhibit on their phone. Everything is simple and convenient. This is exactly why Denso Wave invented them.

A QR code is a great promotional tool. For example, it may contain an encrypted code that must be shown to the seller in order to receive a discount. There are a huge number of applications. Use it!

If you are looking for a QR code scanner in the preinstalled applications on your Samsung Galaxy S8, then you will most probably not find it. The QR Code Scanner, which is also suitable for reading bar codes, has been integrated into another app. And this is the Internet browser.

We now explain to you how to activate the QR reader on the Samsung Galaxy S8 and then use it:

Activate the extension in the Internet browser

Please open the Internet browser on your Samsung Galaxy S8. In the upper right corner, tap the icon with the three dots - A menu appears.

Now select "Extensions" and then activate the controller with "QR code reader"

Scan QR codes

To do this, tap the symbol with the three dots again in the upper right corner. A new menu item is now "Scan QR Code". Select this and confirm that Samsung is allowed to use your camera. Then you can scan a QR code. The result will be displayed directly in the browser.

You now know the procedure to scan a QR code on the Samsung Galaxy S8.

A QR code is an analogue of the older barcode. However, unlike it, it is more secure and practical. The barcode could only indicate some information, such as the website address. QR, on the other hand, carries much more data and allows you to include anything you want. Thanks to all of the above, many programs for scanning such code have appeared on Android. In this article we will talk about how this is done.

In order to scan and decrypt a QR code, you will need, in fact, a smartphone or tablet. Android based with integrated camera. You will also need to install a special application.

There are a lot of programs on the Internet that can cope with this task, as well as on Google Play. It is from there that we will download our 3 nominees. Why is that? It’s simple - by downloading software from the Android brand store, you are guaranteed not to get a virus.

Let’s not, as they say, pour water, and let’s immediately move on to the issue of reading QR codes. In order to do this, the 3 best will be used third party applications, and standard means. True, they are only available in some phone models.

QR BARCODE SCANNER

The first program on our list is QR BARCODE SCANNER, which can be downloaded either from the Play Market or by following this link to the utility’s official website. In our instructions we will show exactly the option with a magazine, since it is more universal. In addition, many of you are reading these lines from a PC, so they will not be able to use the link. So let's get started.

1. The article contains 3 programs that can read and decrypt QR. We will only show the installation of the first of them: the installation of the others is carried out in exactly the same way. First of all, we open the application store. You can find it either on the home screen or in the OS application menu.

1. There is a search bar at the top of the Google Play window. This is exactly what we will use. We activate and write the name of our application. It is not necessary to enter it all the way. As soon as search results The object indicated in the screenshot will appear, just tap on it.

1. We will be redirected to the program home page. There is a big green button that says “INSTALL”. Click it.

1. We are waiting for the application to finish downloading. Since it weighs just under 5 MB, the process won't take much time.

1. Ready. After the automatic installation is completed, we can launch the program directly from here.

1. A launch shortcut will also appear on the home screen (if activated in settings).

At this point, the installation of the program is complete, and we can move on to an overview of working with it.

In the screenshot below you can see the software interface. Here it is divided into 3 main tabs. There is also a settings icon made in the form of a gear. On the main “SCAN” tab there are 4 main tools:

• Scan Barcode. This is a QR scanner that works through a camera;
• Manual Key-in. Function of manual code data entry;
• Decode from File. Decoding from a file. From here you can open the previously downloaded QR code and read it;
• Decode from Url. Scan by link.

At the bottom there are several buttons that do not provide useful functionality. You shouldn't pay attention to them.

Let's look at the program settings. There are quite a lot of them here. There will be screenshots of different configuration areas on your screens, but we will simply voice some of the most interesting points.

For example, on the first screen you can enable or disable the sound of the program. The same can be done with vibration response. You can set the operating mode when the program starts running immediately from the scanner, bypassing the main menu. Another important feature is automatic copy data to the clipboard.

As soon as we want to start scanning and launch the scanner itself, the program will request access to the necessary system resources. Naturally, it needs to be resolved. Click the button marked in the screenshot.

Next, we position the scanner frame so that the horizontal strip falls directly on the QR. Try not to shake your hands and at the same time watch your focus. Without normal sharpness, scanning will not succeed.

To enable QR BARCODE SCANNER to operate in low light conditions, there is a backlight.

Once the code is recognized, you will see the information shown in the screenshot below.

In addition to scanning QRs, you can also create them here. To do this, go to the third tab. We marked it in the screenshot. The list shows all types of data that can be encrypted. The following is supported:

• phone book contact;
• phone number;
• URL;
• Email;
• application;
• location;
• any text;
• bookmark;
• calendar event.

It all looks like this:

Once the data type is selected and specified, all we have to do is click the “Encode” button. In this case, we have encrypted the link.

Let's try to encrypt arbitrary text as well. To do this, select the desired item.

Enter the phrase in the designated field and press the “Encode” button.

The result looks great. Let's also change its color. Click the button intended for this.

Select the desired shade from the palette.

And we admire the received QR.

Let's move on to the next program, which also has impressive functionality.

QR Droid Code Scanner

Another application that can be found on Google Play. You can also download it from a direct link on the Google website. For now, we will look at the program itself.

This is what the QR Droid Code Scanner launch shortcut looks like – click on it.

This application, unlike the previous one, is made in Russian and, as soon as it starts, we will need to click on the button that says: “GET STARTED”.

The scanner is immediately visible, but first let's look at its settings. Tap on the button located in the upper right corner.

In the main menu, 6 button tiles are visible that redirect the user to the desired section. Here they are:

All points are in front of you:

So, in order to use the scanner, you need to activate it in the main menu and, pointing at the QR code, press the “Read” button.

Here you select the start screen, set the address for Reserve copy and the language of the software interface is configured.

Next we can install the scanning mechanism. One of the proprietary algorithms is used: Zapper or ZXing. Below you can enable or disable the crosshair, set up an automatic action after scanning, and enable the display of tooltips or copying of the link to the clipboard.

IN this section The sound is adjusted, vibration is turned on and off. The process of recording actions in the log and interaction with smart devices is also configured. Android watch Wear.

Then we will be able to export or import backup copy or set the date.

Allow the sending of anonymous data (it is better to disable), activate verification of the security link received during scanning, or configure batch scanning. Features such as zooming or highlighting are available below.

But our settings don’t end there. In addition to the above functions, we have the following:

• setting screen orientation;
• working with the front camera;
• link parsing;
• display of stores.

It looks like this:

• extended slip function;
• prohibition of some special characters;
• activation of WEB preview;
• search for saved images.

The last settings screen contains interesting features such as setting the maximum number of positions, configuring custom CSVs, shaking the smartwatch, and saving duplicate positions.

In addition to the settings, in the QR Droid Code Scanner menu there is an item called “More”. Let's consider its functionality.

Here are the following possibilities:

All functions are before you:

Let's look at the last, but no less functional, application on our list.

NeoReader QR & Barcode Scanner

This program, like others, you can download and install via Google play or via direct link. When this is done, you can proceed directly to working with it.

The first time we launch, we will need to satisfy the access request. Click “ALLOW”.

Then a settings window will appear. Here you can choose a language, indicate your country, gender and age. The two checkboxes below allow you to enable or disable the program’s access to geodata.

You can actually start scanning. Point your camera at the QR code and NeoReader QR & Barcode Scanner will automatically recognize its content.

When the sign appears, we can either get Additional information about it, or open it in a browser.

You can also choose exactly the browser you want.

And here is the result. The pack of diapers is recognized flawlessly and we see the official Libero website.

We think that these three programs are completely enough for any person. Choose the one that is most convenient for you and use it at your discretion. We'll talk about some of the features of Chinese devices.

Standard functionality

Some smartphones and tablets (depending on the brand) have QR code scanning functionality as standard, and everything can be done without an application. We won’t list them all; we’ll only touch on the model from Xiaomi.

1. In order to read QR on such a smartphone, you first need to launch its standard camera.

1. Next, tap on the “Modes” button.

1. At the top right of the screen is the settings button. We tap on it.

1. Find the item indicated in the screenshot and enable it.

1. Now, when a QR code appears in front of your camera lens, it will be automatically recognized. You will see a link like the one shown in the screenshot below.

1. A selection window will open in which you can either copy the link or open it in a browser.

Let's sum it up

As a result, we learned how to scan a QR code on Android different ways. We hope the article was useful to you. If you still have questions, ask them in the comments. We will try to help everyone.

Even if this does not happen, one of the users on the site will definitely tell you how to get out of the situation and give useful advice. All you have to do is bring it to life.