OnePlus 6T In-Display Fingerprint Scanner Will Get Better and Faster Over Time, Company Says

A OnePlus forum post provides details on how the OnePlus 6T sensor works and how it improves over time.


In-display fingerprint readers in smartphone have just been barely a year and things are already improving, be it efficiency or accuracy of the new sensor with the ‘Screen Unlock’ branding. OnePlus recently introduced its first phone—OnePlus 6T—with such a sensor. It’s a pretty reliable scanner but a new report citing a post on the OnePlus forums says that the sensor improves over time and increases the speed of unlocking.

Now, this is something new and it could be very handy as the new on-screen sensors aren’t quite at par with blazing fast affordable fingerprint readers. The forum post from Yale Liu, a software engineer at OnePlus, goes into detail as to how the sensor works and what makes it improve with passing time. Take a look at the interesting details below.

OnePlus 6T Screen Unlock

OnePlus 6T On-Screen Fingerprint Reader Improves Over Time

Apparently, OnePlus was toying with the idea of on-screen biometric sensors since the OnePlus 5T (Review), but the speed of the sensor is what made the company rethink its move. The company now claims that the OnePlus 6T‘s in-screen sensor unlocks a phone in just 0.34 second.

The company also explained its reason for including the green-colored backlight on the screen to pinpoint the placement. The green light helps more in recognizing fingerprints and since the sensor works by reflecting light off the finger, it was thought to be the ideal choice. The data from the scan is taken and stored on the phone and it is matched with the user’s fingerprint when he/she touches the screen.

But here’s how the speed of the sensor improves. As the sensor gets used regularly, the sensor keeps scanning the finger and adds missed data to its existing record, eventually accumulating more accurate data on the subject’s fingerprints over time. The post goes as far as to say that the sensor records data in varying conditions such as a wet/cut finger and uses this information for possible future similar scenarios.

What the company’s forum post does not convey is the exact level of improvement. Hence, even if the sensor will improve it’s not known how fast it will get. This will probably depend upon the user’s observation as well. If you’re a OnePlus 6T user, let us know your experience with the sensor. More specifically, did you notice any improvements in speed or accuracy?

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How to Get the Best Out of the OnePlus 6T Screen Unlock

This is a fairly new technology and OnePlus wants the user to follow certain instructions to get the best out of the scanner. First off, make sure the handset is updated to the latest version of OxygenOS. You can always find updates in the settings menu. Also, when registering, make sure it is at a normal room temperature and where the light is dim or preferably switched off.

Also, for regular use, keep the screen and finger clean. Applying a certain amount of pressure works to the benefit of the scanner but don’t exert too much pressure. Hold the finger in place until the unlock is complete. While other screen protectors will work fine with the optical scanner, OnePlus recommends its own screen protector which it launched recently.