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Ultrasonic Fingerprint Sensor Of Samsung Galaxy S10 Explained



Ultrasonic Fingerprint Sensor

In-Display or Under-Display Fingerprint scanners are not a new thing. Vivo first introduced this technology in Vivo X21. After that many brands such as Oppo, Oneplus, Huawei and Xiaomi implemented this In-Display scanner. Recently Vivo launched Vivo V15 Pro with next-generation In-Display Fingerprint Scanner. But all these are Optical scanner, which has some limitations. Now, Samsung is joining this trend and Launched Galaxy S10 and Galaxy S10 Plus with In-Display Scanner. But, unlike any other scanners, these fingerprint readers are Ultrasonic Fingerprint Scanner. What is Ultrasonic Fingerprint Sensor? Let’s know more about Samsung Galaxy S10 Ultrasonic Fingerprint Sensor.

What is Ultrasonic Fingerprint Scanner and How it Works?

Samsung Galaxy S10 and S10 Plus use Qualcomm’s ultrasonic in-screen fingerprint technology. Qualcomm’s 3D in-display ultrasonic fingerprint scanner is based on Ultrasonic sound. These waves are used to map out the details of the user’s fingerprint. Fortunately, there’s no need to swipe, just put your finger on the sensor like the top of the line capacitive fingerprint scanners.

s10 Ultrasonic Fingerprint

Samsung Galaxy S10 is the first phone with Ultrasonic Fingerprint Sensor. This new technology is costlier than regular scanners. This technology can be used on devices powered by Qualcomm Snapdragon 855.

Must Read – Samsung Galaxy S10 Variants Major Difference

Benefits Of Ultrasonic Fingerprint Sensor

The Ultrasonic Fingerprint Sensor captures the fingerprint through water, lotion, and grease. It means, unlike the Optical or Physical Fingerprint reader you necessarily don’t need to clean your hand before unlocking your phone.

As we mentioned above you don’t need to press the power button first to unlock your phone. Just put your finger on the lower portion of the display of your phone and it unlocks immediately. Because Ultrasonic waves don’t need light to identify the finger so it works at night or in bright daylight.

Qualcomm also claims it’s faster and much more secure than the optical fingerprint sensor. That’s because the ultrasonic fingerprint reader takes a 3D map of the finger compared to a 2D image in the optical sensor.

The soundwaves can also detect your blood flow in your finger, it means a 3D model of your finger can not unlock your phone. Fake fingers or synthetic skin can not fool this technology.

It is incredibly thin (0.2mm) so it can easily use in super-thin devices. Also, such sensors can detect your pulse, so it can be used to monitor heart rate, BMI, and blood sugar levels.

Qualcomm says that there is about a 250-millisecond latency for unlocking, which is equivalent to capacitive fingerprint scanners. The sensor has about a 1 percent of error rate which is not bad at all.


An interesting thing about Samsung Galaxy S10 Ultrasonic Fingerprint Sensor is that not every screen protector will work on its display. Those sound waves can not travel very far. Not all but few thin tempered glass works fine. You can still use plastic protectors with Samsung Galaxy S10 and S10 Plus.

Stay tuned with us to know the difference between the optical, physical and ultrasonic fingerprint sensor.

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