How to put a fingerprint on shaomi apps

Xiaomi, Redmi and Poco smartphone owners often seek to protect their personal data from prying eyes. Standard screen locking is good, but storing sensitive information, banking applications or private photos requires a more reliable level of protection. The built-in security system MIUI and HyperOS allows you to link the user’s biometric data to specific programs, creating an additional barrier when they are launched.

The setup process does not require any technical knowledge, but it has its own peculiarities depending on the version of the operating system. Unlike simple unlocking the device, installing a fingerprint on individual applications activates a special access encryption module, which ensures that even with an unlocked phone, an attacker will not be able to launch WhatsApp, Telegram or a banking application without re-confirming the identity.

In this article, we will take a detailed look at the algorithm that will help you close access to important data, learn about the nuances of the scanner in different shells, understand why errors can occur, and learn how to properly calibrate the scan for instantaneous response of the system.

Preparation of biometric data in the system

Before you restrict access to specific programs, you need to make sure that the smartphone itself "knows" your finger. Without a stored security benchmark, you can't install protection on applications. The initial setup process is the foundation for all future actions with biometrics.

To start, open the main settings menu of your device.Look for Password and Security or Fingerprints, facial details, the name may vary slightly depending on the version. MIUI. So you're going to have to select a new fingerprint, and the system will ask you to repeatedly put your finger on the scanner, changing the angle of inclination to create an accurate fingerprint. 3D-papillary.

The reading quality depends on the condition of the finger and scanner, and if there is dirt on the sensor or the finger is wet, the system can suggest restarting the process, and the perfect calibration is achieved if you add the same finger twice as two different fingerprints, which will significantly improve the speed and accuracy of recognition in difficult conditions.

⚠️ Warning: Do not attempt to use tape or film on the scanner to "improve" the readout, which can cause permanent damage to the sensitive sensor and loss of warranty on the device.

Once the data is saved successfully, the system will suggest using the fingerprint to unlock the screen and pay.Agree with these suggestions to activate all available security features.Now your Xiaomi smartphone is ready for a more subtle access setting.

Activate application protection through security settings

Once biometrics are successfully stored, you can move to direct protection of the software, and in the Xiaomi ecosystem, the built-in application protection component is responsible for this, and it works independently of the main lock, creating a second line of defense.

To activate the function, go to the Settings menu and select the App. In the list that opens, find the Application Protection option. When you first start, the system will require you to specify a graphical key or a digital key. PIN-This code will be used as a backup login method if the fingerprint scanner fails for some reason.

Once you set the password, you'll see a list of all the programs you've installed. Switch the switches against the apps you want to hide or protect. It can be a gallery, messages, bank clients or social networks. Once you activate the switch, the system will automatically prompt you to enable fingerprint unlock.

It is important to understand that activating this feature may slightly increase the run time of a secure application, which is normal system behavior caused by checking cryptographic security keys before opening the program interface.

Setup Unlocking for Selected Programs

Once the application protection is enabled, you need to make sure that the authentication method is installed correctly. Sometimes the default system offers a password, and the user needs to manually switch to biometrics for convenience.

Open any secure application. You'll see a request to enter a previously specified pattern lock. At the bottom of the window or in the settings of the security function itself, find Settings or the gear icon. You'll have to activate the fingerprint unlock switch.

If the switch is already active but the phone still requires a password, try rebooting the device. Often, MIUI security services require an initial password input after the reboot to unlock the crypto container, after which the biometrics begin to work normally.

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For maximum convenience, use the thumb of the hand you normally hold your smartphone, which will speed up access to applications in transport or on the go.

It is also worth noting that some system applications may not support this feature or require additional permissions, in which case the system will issue a warning, and you will have to settle for a standard lock screen.

Using the Second Space as an Alternative

For users who need to not just close the app, but completely hide its presence on the device, Xiaomi offers a “Second Space” feature, which is essentially the creation of a second virtual smartphone inside a single physical device.

The second space has its own desktop, its own apps, and most importantly, its own separate fingerprint to log in, and you can set the system up so that when you put your thumb, you open the main interface, and when you put your index, you have a hidden space with all the secret data.

To activate, go to Settings → Additional → Second Space. Press the Power button and follow the instructions of the Settings Wizard. In the process, you will be asked to assign different prints to switch between spaces.

This method is ideal for situations where you need to hand over your phone to someone for a call or a game, but you don't want the person to see your personal correspondence or files. Switching between profiles is instantaneous on the fingerprint, which makes the technology very convenient in everyday use.

Solution with fingerprint recognition

Despite the high accuracy of modern scanners, users of Redmi and Poco sometimes face recognition problems, most often due to software failures or sensor contamination, less often hardware malfunctions.

If the fingerprint on the apps stops working, check whether the protection against accidental clicks or the In-pocket mode has worked first. Also make sure that the date and time settings are automatically updated, since desynchronizing the time may interfere with the security certificates.

In cases where the scanner is slow or wrong, try removing the old print and writing it back, paying special attention to the edges of the finger, sometimes helping to clear the cache of the system application "Security" through the memory management menu.

Remember that after updating the Android operating system or the MIUI shell, the biometrics settings can be reset for security reasons, in which case you will need to re-add the fingerprint and reconfigure the protection for the applications.

Features of work in HyperOS and new versions of MIUI

With the release of the new HyperOS shell, Xiaomi changed the logic of some interface elements, although the essence remained the same. The settings menu became more logical, but the paths to the desired functions could shift.

In newer versions, application protection is often integrated into the Security app (green lightning icon), not just the general settings. When you open it, find the Application Protection section in the bottom menu or tool list, and access management is more flexible.

The innovation is that you can configure different access scenarios, for example, you can configure applications to open by fingerprint only when you have Wi-Fi connected, or you can require stricter verification on public networks, which is part of the smart security concept that the manufacturer is promoting.

Users of newer versions should also pay attention to privacy settings. In the Privacy section → Special permissions can check which applications have access to biometric data, and if necessary, limit this access to suspicious software.

Frequently Asked Questions (FAQ)

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Using a fingerprint to protect your applications is a balance between convenience and security, and don’t neglect to set up a complex backup password, which is the key to your data in the event of a biometrics failure.