Learn how to make a fingerprint on a smartphone in a few simple steps. Enhance security and convenience with this guide to fingerprint recognition.A fingerprint is one of the most reliable ways to protect data stored on your smartphone from strangers. We tell you how to use this feature on Android devices.The main purpose is to protect the smartphone in general and various applications in particular. If your device falls into the hands of a stranger, with such protection for the safety of your data you can be at peace. At least for some time for sure.
But some manufacturers are trying to link fingerprinting with other gadget features. For example, with a finger touch you can confirm a payment, accept a call, turn off an alarm clock, or take a photo.
How to save fingerprint on smartphone.
In 2025, fingerprint scanners are probably absent only on the most run-down budget phones. As a rule, they are located on the side, on the power button, and on the phone screen. On older models, they were built into the back panel. But regardless of where the engineers installed it, the operating principle is the same everywhere. The biometrics themselves are entered into the device as follows:
- In the “Settings” of your smartphone, go to the “Passwords and Security” section;
- First, click on “Unlock with fingerprint”, and then on “Add fingerprint”;
- Access to “Unlock with fingerprint” is protected. Therefore, if you have previously configured the security of the gadget, then enter your password or key. If not, the system will strongly ask you to do this as soon as possible;
- Place your finger on the scanner and follow the on-screen instructions until you see a notification that the addition was successful.
Here you can also adjust various parameters related to this protection method. For example, select a recognition method or specify options for use.
Also, just in case, it is recommended to save samples of different fingers. This will help not to lose access to data in a critical situation.
How to Protect Apps with a Fingerprint
The fingerprint serves as a universal means of protecting your applications. The algorithm of actions is as follows:
- Run the desired program;
- Open Settings and go to the Security section;
- Activate the “Fingerprint Login” function;
- In some cases, the system may ask you to place your finger on the scanner for confirmation.
Depending on the application, the order may differ slightly, but the principle is the same everywhere. At the same time, a significant part of modern utilities, especially banking ones, offer to connect this option at the first launch.
This function can also be easily enabled in the phone’s “Settings”.
- In the device’s Settings, go to Applications;
- Tap on “App Protection”;
- Enable fingerprint protection on the desired program.
Now, when you launch the application, it will ask you to place the desired finger on the scanner.
What to do if the scanner does not work
The scanner, like any other part, can malfunction or break at any time. If you are unable to unlock the device in the usual way, try the following:
- If your hands are wet, wipe them dry, as the scanner does not read information well from wet skin;
- Gently wipe the surface of the scanner itself;
- Press the power button and lock the screen for a few seconds, then try to log in again;
- Restart your smartphone;
- Re-record the fingerprint again. Due to the nature of your work or other reasons, the pattern may have changed.
If none of this worked and the scanner shows no signs of life, then you should contact a service center for help.