When it rains, as soon as you want to unlock your phone with your fingerprints, you have to start by wiping your fingers. Same thing if you just added cream. With the new ultrasonic sensors, this will no longer be necessary. Instead of analyzing some kind of photo of your finger, they work a bit like sonar. That is to say, they detect the differences between the furrows and ridges of the print to recognize it. Thus, they are less disturbed by liquids and small impurities on the fingertips.
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**In fact, these sensors are much more reliable since the fingerprint is analyzed in 3D. In addition, the system is capable of detecting blood flows circulating at the same time in the veins. So you can’t fool it with a fake finger or a silicone mold.
Increased reliability and smoother use
Another new feature is that these sensors are becoming much larger. We will therefore no longer be obliged to place our finger on a specific location. With Qualcomm’s latest sensor, for example, almost a third of the screen can be used to scan its fingerprint. This allows you to unlock your phone without even looking at it.
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**Finally, last refinement: the recording of the fingerprint is now done in one go. No more tapping repeatedly on the location and then repositioning your finger when configuring your fingerprints. Again, it will be simpler and faster.
This device is currently expensive. Today, in June 2024, it is only found on the most high-end models. But Qualcomm now has competition with the arrival of the Chinese Goodix. He is a fingerprint specialist who has just launched into ultrasonic sensors. He also intends to lower the price of the technology to distribute it to more phones. Which is rather good news if it continues to rain or if you love to apply cream.
