BARCELONA, Spain, Feb. 27, 2019 /CNW/ -- Sonarax (https://sonarax.com/), the ultrasonic communication technology company, unveils a new standard in machine-to-machine ...

Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...

If you’re already worried about ads tracking your online whereabouts, here’s a new thing to freak out over: cross-device tracking that communicates using high-pitched audio frequencies. As reported by ...

You can prevent facial recognition cameras from identifying you by wearing face paint, masks, or sometimes just a pair of oversized sunglasses. Keeping conversations private from an ever-growing ...

Floating world: a 3D globe created by the University of Sussex display. (Courtesy: Eimontas Jankauskis) An ultrasound-powered, 3D visual display that can also produce audible sound and holograms that ...