Without any delays, here are the best Phones with Ultrasonic Fingerprint Sensors (May 2025) that make the cut: ...

Continuous ultrasonic welding presents the flexibility crucial for future lunar and deep-space missions, but also for defense ...

Abstract: Soft piezocapacitive sensor, owing to its simple assembly and low power consumption, draws intensive interests for physiological monitoring. However, crosstalk between proximity sensing ...

This project demonstrates how to build a wireless and contactless doorbell using Arduino and 434 MHz RF modules. The system uses an IR sensor or ultrasonic sensor to detect a person near the door, ...