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This Redditor Turned His Xiaomi Phone’s In-Display Fingerprint Sensor Into a Camera

Dec. 27, 2020

To offer a cleaner design to users,phone makers started baking in-display fingerprint sensorsinto their devices. It tucks away the fingerprint sensor under the display, thus, eliminating the need for a physical one on the rear or front. Now, acreative Redditorfound a way to convert the in-display fingerprint sensor of his Xiaomi smartphone into a working camera. Yep, you heard that right!

Now, before getting into the story, let me tell you a bit aboutoptical fingerprint sensors. Unlike capacitive sensors that use capacitors to form an image of a fingerprint, the optical ones come with tiny digital cameras that take a picture of the same.

So, the Redditor,u/ntelas46found a way to see what the in-display fingerprint sensor of his Xiaomi 9T sees. He apparentlyused a third-party app called the “Activity Launcher” to access hidden activitieson his smartphone. The user shared a screen recording of the same on Reddit which you can check out right below.

You can see what the fingerprint camera sees by searching it in “activity launcher” app.fromXiaomi

As you can see in the video, he opened the Activity Launcher app on his device and searched for the fingerprint sensor. Then, he opened a new page by tapping the “Locate sensor” button. On this page, we can seea tiny viewfinder showing what the digital camera of the fingerprint sensor sees.

Now, do keep in mind that this digital camera cannot take your pretty selfies as it can only focus on objects till the glass display of the device. Moreover, there is alwaysa risk of damaging hardware componentslike fingerprint sensors by tinkering with the factory settings.

So, if you are planning to turn the in-display fingerprint sensor of your smartphone into a camera using Activity Launcher, move ahead with caution.

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