“The Bracelet of Silence”
The dilemma with phones and smart-speakers are that they undermine the privacy of not just their owners, but everyone around them. Maybe you have a friend who loves talking about their cat, and that’s perfectly fine… until YOU begin getting ads for cat-food on your Instagram.
Students at the University of Chicago developed a unique, wrist-worn bracelet that can remotely scramble all sorts of microphones in a working radius of a few feet. Just wear “The Bracelet of Silence” and switch it on when you want a private conversation, and its multiple ultrasonic sensors disable nearby microphones, preventing them from being able to hear anything you say.
The wearable comes with an array of 24 ultrasonic transducers that jam microphones in ALL directions. When worn on your hand, the jammer uses your hand’s movements to increase its range and eliminate audio blind-spots, effectively jamming all sorts of microphones (even ones hidden from view).
The video below successfully demonstrates how the jammer works… in fact, it even disables the video-recording camera’s in-built microphone, preventing you from hearing anything the subjects of the video are saying!