Question:

Why does fingerprint recognition sometimes not work properly compared with other S20 series?

Answer:

The fingerprint scanner on the S20 series smartphones may differ depending on the model. The S20 has an ultrasonic fingerprint sensor, while the S20 FE has an optical fingerprint sensor. This leads to differences in fingerprint operation methods, but both models have similar fingerprint performance. However, fingerprint recognition may decline under specific usage conditions due to the characteristics of optical sensors. Strong light entering the optical fingerprint sensor makes it challenging to accurately read the fingerprint since it exceeds the amount of light the sensor can handle. When attempting fingerprint recognition in places with strong surrounding light (e.g., sunlight), cover the fingerprint sensor completely with your fingers to prevent excessive light from affecting the sensor's accuracy.

Terms:

Ultrasonic fingerprint sensor - A security technology that uses sound waves to create a 3D map of your fingerprint, providing more accurate and secure authentication.

Optical fingerprint sensor - A security technology that captures images of your fingerprint using reflected light, making it less expensive and faster than ultrasonic sensors.

Fingerprint operation method - The way users interact with the fingerprint scanner on their device, including registration and unlocking processes.

Strong light - Excessive amounts of light, such as direct sunlight or bright indoor lighting, that can interfere with the proper functioning of an optical fingerprint sensor.

Cover fully - To place an object (in this case, your fingers) over the entire surface of the fingerprint sensor to block out external factors like strong light.

Accurately read - The ability of a fingerprint sensor to correctly recognize and match the pattern of your fingerprint with the one stored in its database.

Limit of light - The maximum amount of light that an optical fingerprint sensor can process without becoming overwhelmed or producing inaccurate results.