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Ultrasonic Fingerprint Readers: The Security Hidden Under the Screen

Fingerprint readers have become an essential feature on smartphones, offering a fast and secure way to unlock the device and protect personal data. Among the different types of readers, ultrasonic readers stand out for their precision and security, in addition to being located under the screen, offering a cleaner and more modern design.

How Do Ultrasonic Fingerprint Readers Work?

Ultrasonic fingerprint readers use high-frequency sound waves to create a 3D map of your fingerprint. When you place your finger on the sensor, the device emits ultrasonic waves that penetrate the skin and return with detailed information about the grooves and ridges of your fingerprint.

Unlike optical readers, which capture a 2D image of the fingerprint, ultrasonic readers can "see" the deeper layers of the skin, which makes the reading more accurate and difficult to cheat.

What are the Advantages of Ultrasonic Fingerprint Readers?

Enhanced Security

Ultrasonic technology offers greater security compared to other types of readers, as it creates a 3D map of the fingerprint, making it difficult to forge and copy.

Accuracy

Ultrasonic readers are more accurate at reading fingerprints, which means unlocking your phone is faster and more reliable.

Under-screen operation

The location under the screen allows for a cleaner, more modern design, in addition to making it easier to use the phone with one hand.

Unlocking in various conditions

Ultrasonic readers work well even with wet, oily or dirty fingers, which is an advantage over optical readers.

What are the Leading Models and Manufacturers?

Ultrasonic fingerprint reader technology was popularized by Qualcomm, which offers its sensors to several cell phone manufacturers. Some models that stand out for this technology are:

Samsung Galaxy S23, S22, Note 20

Samsung is one of the main manufacturers that uses ultrasonic fingerprint readers in its high-end cell phones, such as the Galaxy S and Note lines.

Other models

Other manufacturers also use this technology in their cell phones, such as Vivo and OnePlus. It is important to check the specifications of each model to confirm the presence of the ultrasonic reader.

How to Set Up the Ultrasonic Fingerprint Reader?

Setting up the ultrasonic fingerprint reader is simple and quick:

  1. Access the cell phone settings: Go to your cell phone settings and look for the "Biometrics and security" option or similar.
  2. Register your fingerprint: Follow the on-screen instructions to register your fingerprint. Generally, you need to place your finger on the sensor several times, in different positions, so that the cell phone can create a complete map of your fingerprint.
  3. Customize the settings: After registering your fingerprint, you can customize the reader's settings, such as choosing which apps can be unlocked with your fingerprint and adding other fingerprints.

How to Use the Ultrasonic Fingerprint Reader?

To use the ultrasonic fingerprint reader, simply place your registered finger on the sensor, which is usually located at the bottom of the screen. The cell phone will recognize your fingerprint and unlock the screen in a matter of seconds.

Conclusion

Ultrasonic fingerprint readers are an innovative technology that offers security, accuracy and practicality in cell phone use. Their location under the screen ensures a more modern design and makes it easier to unlock the device with just one hand.

If you are thinking about buying a new cell phone, look for models that offer ultrasonic fingerprint readers. This technology will make all the difference in your day-to-day life, providing a safer, faster and more convenient user experience.

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