Ultrasonic fingerprint sensors are changing the way we think about smartphone security—offering faster, more reliable unlocking, even with wet or dirty fingers.

A polymer corrugated diaphragm-based fiber-optic Fabry-Perot (FP) interferometer is proposed as an ultrasonic sensor and directly fabricated on an optical fiber tip by direct laser writing via ...

1451.7-2010 - IEEE Standard for Smart Transducer Interface for Sensors and Actuators--Transducers to Radio Frequency Identification (RFID) Systems Communication Protocols and Transducer Electronic ...