Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at ...

Ultrasonic sensors provide a more accurate fingerprint scan when compared to traditional optical scanners, but they're also more expensive. Goodix's under-display ultrasonic fingerprint scanner aims ...

UltraSense emerged from stealth to develop ultrasound sensors that sense movement and gestures through virtually any material.