Researchers convey demonstrated how sonic together with ultrasonic signals (inaudible to human) tin live used to effort physical harm to ...
Showing posts with label ultrasonic signals. Show all posts
Showing posts with label ultrasonic signals. Show all posts
Hundreds Of Apps Using Ultrasonic Signals To Silently Rail Smartphone Users
Your smartphone may bring some apps that are continuously listening inaudible, high-frequency ultrasonic sounds from your environs togeth...