Samsung's ultrasonic fingerprint sensor uses sound waves to read the unique 3D pattern of your finger through the screen.
Built directly into the display, the Ultrasonic Fingerprint scanner functions as a biometric authentication feature. It operates by sending ultrasonic pulses towards the finger placed on the screen. As these sound waves interact with the finger's surface, they bounce back in different ways depending on the distinct pattern of 3D ridges and valleys that make up each unique fingerprint.
The sensor then detects the specific way the ultrasonic pulses return, creating a detailed, three-dimensional map of the fingerprint's surface. By analysing this precise 3D data, the system can quickly and correctly recognise users for secure authentication, providing a robust method to unlock devices or verify identity.
Here's a simple breakdown based on the process:
- Location: Built into the screen.
- Mechanism: Sends ultrasonic pulses.
- Detection: Reads the detailed 3D ridges and valleys of the fingerprint.
- Outcome: Quickly and correctly recognises the user.
This method offers a detailed scan of the fingerprint's topography, enhancing security and accuracy compared to traditional 2D optical methods.
