New ultrasonic bracelet can block microphones - It works, but it's too bulky except for NSA agents to wear
Researchers at the University of Chicago have developed a bracelet which can be used to jam microphones in a number of mainstream consumer devices. The jammer employs 24 speakers which are pointed in multiple directions and transmit ultrasonic sound to interfere with the audio recordings on microphones.
“Our device is based on a recent exploit that leverages the fact that when exposed to ultrasonic noise, commodity microphones will leak the noise into the audible range,” the researchers said.
If this were a bit smaller it may be a popular item amongst many groups of people. Now all they need is a device like this for cameras for AirBnB guests and you have another winner.
See New ultrasonic bracelet can block microphones
Researchers at the University of Chicago have developed a bracelet which can be used to jam microphones in a number of mainstream consumer devices.
source https://gadgeteer.co.za/new-ultrasonic-bracelet-can-block-microphones-it-works-its-too-bulky-except-nsa-agents-wear
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