If you’re wondering how an in-display fingerprint sensor works in a Smartphone, you’ve come to the right place. Here’s a quick primer on how the in-display sensor works. In this article, we’ll cover the differences between Capacitive, Optical, and Ultrasonic scanners, as well as the Goodix sensor. Once you’ve mastered all of the details, you’ll be well-equipped to answer the question, “How does an in-display fingerprint scanner work in a Smartphone?”. Find out more info about latest tech on our website.
Optical scanners
Optical in-display fingerprint scanners work by capturing a 2D image of the fingerprint. These images must be sharp and have both light and dark regions to accurately depict the fingerprint. This type of scanner is more secure than capacitive ones, because they work through dirt, oil, and water. The Samsung Galaxy S10 fingerprint scanner uses sound waves to map fingerprint ridges, which makes it much more accurate.
Capacitive scanners
Capacitive scanners are becoming more popular in smartphones. They have several advantages, including being less likely to be compromised by image hacking, and they are easier to locate without looking at the display. However, these sensors may be more expensive, and you should look for a cheaper alternative if you really need to avoid the added cost. A capacitive sensor will be much more difficult to fool than an optical one, and will also not be affected by wet hands, making them a cheaper alternative.
Ultrasonic scanners
An ultrasonic fingerprint scanner uses a high-frequency sound to map a person’s finger. The ultrasonic pulse travels from the transmitter through the finger to the receiver. Some of the ultrasonic pulse is absorbed by the fingerprint while the rest bounces back to the sensor. The information is then compared to the fingerprint’s previous data. Then, the smartphone can identify a particular user’s fingerprint.
Goodix’s sensor
The Goodix IN-DISPLAY FINGERPRINT SENSOR is a key technology in the evolution of bezel-less smartphone designs. Goodix’s fingerprint sensor turns a designated area of display into a fingerprint sensor button. The company has already commercialized the sensor in smartphones for major brands including Samsung and LG. The in-display fingerprint sensor has also found its way into the latest OnePlus 7 Pro model.
Synaptics’ sensor
One company is trying to bring in-display fingerprints to smartphones with its optical fingerprint sensor, known as the Clear ID. This sensor sits under the front screen of smartphones and works just as users would expect. As a result, it is likely to gain in popularity with smartphone makers. In addition to smartphones, it could also be used for wearable devices, including smartwatches.