Owners of the Xiaomi Redmi Note 8 smartphone often face the need to quickly count or create a unique barcode for connecting to Wi-Fi, paying for purchases or logging in to applications. The standard procedure for finding this feature may seem unobvious, since the MIUI shell scanning tools are scattered across different system utilities. Understanding where to look for the right functionality saves time and eliminates the need to download dubious software from third-party sources.
Modern Xiaomi devices have built-in recognition algorithms that work directly through the main camera module or the system security application. However, depending on the firmware version and regional settings, these features can be accessed in different ways. In this article, we will discuss in detail all possible ways to activate the scanner, adjust focus settings and create your own codes directly on your gadget.
It is important to note that the scanner’s proper performance depends not only on the software part, but also on the state of the camera lens. Before using it, make sure the lenses are clean and access to the camera is not blocked by third-party applications. We will look at both the regular Android system tools and specific tools implemented by Xiaomi engineers to improve the user experience.
Use of built-in scanner in the Camera application
The fastest way to find and count QR-The code on the Redmi Note 8 is a standard Camera application, and Xiaomi engineers integrated the recognition algorithm directly into the viewfinder, so you don't switch between applications.
However, by default, scan mode can be turned off in the settings to avoid accidental positives when shooting documents or landscapes. Go to the camera settings menu (the icon with three stripes or a gear in the corner of the screen) and find the item Scan QR--Put the switch to active position.
Once the function is enabled, the system will automatically analyze the image in real time, and when the camera recognizes the code structure, a pop-up notification or a link to transition will appear on the screen, and the reaction rate depends on the lighting and the quality of the code itself.
⚠️ Note: When scanning codes from unknown sources, the system may issue a warning about a potential security threat. Never follow links unless you are sure of their origin, as this may lead to a move to a phishing site.
To improve read accuracy in difficult conditions, try changing the distance to the object or the angle of the smartphone. Redmi Note 8 autofocus should clearly highlight the boundaries of the square. If the camera can not focus for a long time, wipe the lens with a soft cloth, as greasy spots often interfere with the correct recognition of contrasting black and white modules.
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Use the Pro mode in the camera to manually adjust your focus if the automatic mode is constantly mistaken when reading small codes on screens of other devices.
Search for code through the Security app
If a standard camera for some reason does not activate the scanner, the second reliable place where you can find the functionality of working with the scanner. QR-The codes, is the system application Security. It's the central utility in the shell. MIUI, combining antivirus, memory cleanup and various scanners.
To start the process, look for an icon called “Security” (green shield) on your desktop or in the Tools folder. Select the “Scanner” option inside the menu, which works regardless of the main camera settings, and often has a more powerful algorithm for recognizing damaged or poorly printed codes.
The scanner interface in the security application offers additional features, such as text recognition (OCR) or real-time translation from foreign languages, and you can switch between modes by clicking on the corresponding icons at the bottom of the screen or in the side menu.
This is especially true when you need to not just click on a link, but copy the text content of the code to the clipboard. The scanner in Security allows you to see the raw data encoded in the image, which is useful for checking the correctness of the codes you generate.
Setup and calibration of the camera for scanning
The quality of the barcode reading depends on the correct settings of the optical system of your Xiaomi Redmi Note 8. In some cases, standard parameters may be knocked down or not optimized for working with small parts at close range.
Go to the camera settings and find the partition that is responsible for macro mode or focal length. Make sure that the macro function is working correctly, since many people are not able to see the macro image. QR-codes require the phone to be held at a distance 2-5 It is also worth checking for updates for the system component of the camera in the menu "About the phone».
There is a hidden test mode for checking camera modules, which can help identify hardware problems. To get into the engineering testing menu, open the Phone app (number set) and enter a special code:
##6484##In the CIT test menu that opens, select the item associated with the camera (usually "Front Camera" or "Back Camera"). Here you can check the autofocus and color reproduction. If the camera can't focus on the test table, the problem may be hardware.
What to do if the camera is not focused?
Once you have checked your settings, go back to normal use. Often, a simple reboot of the device helps to reset temporary camera driver errors that may have occurred after a long run or system update.
Creating your own creation QR-code on the Redmi Note 8
Users often search for where to find code, implying the possibility of creating it. On Xiaomi Redmi Note 8 you can not only read, but also generate your own code. QR-codes without installing additional software. This feature is useful for fast exchange of contacts, links to Wi-Fi or text messages.
The generation feature is built into the same Security app that was used to scan. Open the Scanner, click on the menu icon (usually three dots or lines) and select Create QR-The system will offer to choose the type of data: text, link, contact or Wi-Fi network.
When you create a Wi-Fi code, you don't have to manually enter a complex password for guests. Just type in your network, and the phone will create an image that will scan the guest automatically connects to the Internet, which makes it much easier to interact with visitors.
☑️ Creating Wi-Fi code
Once generated, you can save the image to a gallery or send it to instant messengers. It's important to remember that the more data you encrypt into one code, the denser the pattern will be and the harder it will be to read to older devices. Try not to overload the code with unnecessary information.
Comparison of scanning methods on MIUI
For the convenience of users, we have prepared a comparative table of the different ways to work with codes on the Redmi Note 8. The choice of method depends on your specific tasks: whether you need speed, security or additional recognition features.
| Method | Launch speed | Functional | Demands the Internet. |
|---|---|---|---|
| Appendix Camera | Tall. | Basic (references, text) | No (to follow the link) |
| Security Annex | Medium | Extended (translation, goods) | Yes (for some functions) |
| Third-party annexes | Low. | Specialized | Depends on the app. |
| Google lens | Medium | High-pitched (AI-analysis) | Yes. |
As you can see from the table, a full-time camera is the best choice for everyday tasks that require instant response, but a more powerful tool from the Security section or Google services is better for working with goods in stores or translating sign text.
Using third-party apps from Google Play is only justified in the rare cases where standard tools can’t handle the encoding format. Remember that by installing unknown crawlers, you often give them access to your camera and activity history, putting privacy risks.
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The built-in MIUI covers 99% of the user’s needs, making installing third-party software redundant and potentially dangerous.
Solving and eliminating errors
Despite the reliability of Android and the MIUI shell, there can sometimes be situations where the scanner stops responding to codes. The most common cause is a conflict of applications accessing the camera module. Close all background processes and try to start the scanner again.
Also, problems can be related to (permissions). Make sure that the Camera or Security app is given permission to use the camera. Check this out from the Settings menu → Apps → All Apps → [Select App] → Permissions. If the slider is off, the scan will not work.
In rare cases, cleaning the cache of system applications helps, go to the application store and find the "Clear Data" item for the camera app, which will reset the settings to default, but will not delete your photos.
⚠️ Attention: Clearing the data of the Security app can reset the blacklist call settings and other personalized protection options.
If none of the software methods worked, and the camera just can't see contrasting objects, maybe the autofocus module or the sensor itself is damaged, and then you'll need to have a diagnosis at the service center, because the software reset is already powerless.