An under-screen fingerprint sensor works primarily by using an optical sensor to scan and verify your fingerprint through the phone's display. Here's a breakdown of how it typically functions:
-
Illumination: When you place your finger on the designated area of the screen, the sensor illuminates your finger. This illumination is often visible as an animation on the screen.
-
Image Capture: A miniature camera or sensor located beneath the screen captures an image of your fingerprint.
-
Verification: The captured image is then compared to the fingerprint data that was previously registered and stored on your device.
-
Authentication: If the captured image matches the stored fingerprint data, the device unlocks, granting you access.
In short, the sensor uses light, a tiny camera, and software to verify your unique fingerprint for secure authentication.
