Understanding How Fingerprint Scanners Function: Optical, Capacitive, and Ultrasonic Technologies Explained
SummaryFingerprint scanners are pivotal in modern smartphones, employing optical, capacitive, and ultrasonic technologies for user authentication. Optical scanners capture 2D images, while capacitive scanners analyze electrical changes for enhanced security. Ultrasonic scanners create a detailed 3D fingerprint map using sound waves, offering high security but with some practical limitations. In-display technologies allow for a sleeker…