La biometrics, in other words the verification of the identity of an individual by what he is, that is to say by its physical characteristics, is a domain more and more used by technology today.

Real security reinforcement tool, it allows to lock and protect personal data, minimizing the risk of theft.

Moreover, this saves a lot of time in identification, and no longer having to remember increasingly long and complicated passwords.

Smartphone manufacturers Android now use this technology for a few years. A sensor located on the back of your phone allows you to put your finger on it, and therefore allows fingerprint identification digital.

This unique identification allows you to unlock your phone, or access certain applications containing sensitive data, such as banking applications.

We will explain in this article how to use your fingerprint to unlock your Android smartphone. We will also see in a second part how to use this biometric technology for unlock apps.

Fingerprint of finger as lock protection on Android smartphone

As the title suggests, your finger allows you to protect your personal information on your phone. But how does it work? A little reminder on how a fingerprint works.

Fingerprint, how does it work?

La typing is the term used to denote the process of identifying individuals by their fingerprints. This fingerprint is a set of lines of the finger that form as we grow older, to freeze in adulthood.

They will stay absolutely identical throughout our life, as long as we do not deteriorate the condition of our fingers other than through old age.

La probability that two people have the same footprint is about one in 64 billion chance. Suffice to say that it is not tomorrow that we can unlock your smartphone with another finger!

This gives a indications on the safety level of this process. So now let's see how to configure it on your Android smartphone to protect your data.

How to set up your fingerprint as an unlocking security on your Android smartphone

In order to use your finger and its fingerprint, it's very simple. Follow this little manipulation:

  • Open them Settings of your Android smartphone
  • You will see the search bar at the top of your page, type y " fingerprint management« 
  • Open the menu " Fingerprint management« 
  • You will see a page appear as an example below, simply click on " New fingerprint« 

The fingerprint registration procedure is very simple, be sure to ask long enough your finger when asked, by pressing all parts of the finger.

use new fingerprint to unlock android phone

Once this is done, make sure that the option " unlocking the device Is checked above. From there, as soon as your smartphone will be locked, you just have to put your finger at the notch provided for this purpose on the shell of your phone.

What if i have damaged my finger or the imprint does not work?

Don't panic, it's still possible to configure a password to bypass this protection option. However, make sure you know this password well because it will be longer than a simple pin code, in order to ensure more protection for your phone.

As a precaution, we recommend that you add several fingers to your digital recognition, so that you can unlock your phone more easily.

Add a new fingerprint

For register a new fingerprint, it is very simple. Just press new fingerprint, and configure your footprint as described in the first part.

You can freely add and delete the fingerprints as you like.

Delete a fingerprint from my smartphone

If one imprint no longer works or badly, or simply that you no longer wish to use it, it is possible to delete it. You can re-register later if necessary.

To do this, do like this:

  • Go to the fingerprint management menu as below
  • Click on fingerprint that you want to delete
  • You can then reappoint, Or Supprimer
delete your fingerprint on your smartphone to re-register it

Protect an application by fingerprint on Android smartphone

It is also possible to protect access to your applications. This comes in handy when you have sensitive applications, such as banking applications.

In addition, no need to memorize your bank codes, which are often complicated and cannot be changed.

For banking applications, very often, it is regulated in this way:

  • Settings
  • biometrics
  • Set up a fingerprint

You are free to choose a password or a fingerprint as access to your applications.


If you have any problems with your Android smartphone, here are some guides to help you: