They need to be protected at all times, which is why we have a lot of options to secure our smartphones —from the good old PIN and pattern, to the more advanced in-display fingerprint scanner. Fingerprint scanner: Capacitive and In-display Capacitive Scanner This scanner is the most common type found in smartphones these days and is much more reliable in terms of security than the newer optical in-display ones. The technology behind this is that instead of capturing an image of your fingerprint, capacitive scanners use tiny capacitor circuits to collect data. In-display Fingerprint Scanner: Optical and Ultrasonic Optical Scanner This scanner illuminates and captures a 2D image of your finger. Ultrasonic Scanner Unlike the optical scanner, ultrasonic scanners don’t just get a 2D image of your fingerprint. It creates a 3D impression of your fingerprint. It’s like FaceID for fingerprint scanners. Honestly, we still recommend the password, as it is much safer, though less convenient compared to the face and fingerprint unlocking. Read more in our articles including "Fingerprint, Face Unlock, PIN, Password: Which is the best?" and "LG announces development of fingerprint scanner under the screen".
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May 26, 2026They need to be protected at all times, which is why we have a lot of options to secure our smartphones —from the good old PIN and pattern, to the more advanced in-display fingerprint scanner. Fingerprint scanner: Capacitive and In-display Capacitive Scanner This scanner is the most common type found in smartphones these days and is much more reliable in terms of security than the newer optical in-display ones.
The technology behind this is that instead of capturing an image of your fingerprint, capacitive scanners use tiny capacitor circuits to collect data. In-display Fingerprint Scanner: Optical and Ultrasonic Optical Scanner This scanner illuminates and captures a 2D image of your finger. Ultrasonic Scanner Unlike the optical scanner, ultrasonic scanners don’t just get a 2D image of your fingerprint.
Our coverage of In-display fingerprint includes: "Fingerprint, Face Unlock, PIN, Password: Which is the best?"; "LG announces development of fingerprint scanner under the screen"; "iPad Mini with Retina Display now official". Each article provides unique insights and information.