The jammer emits a frequency band to block the microphone on the connected speaker

This jammer wristband prevents the connected speakers from hearing you, and the language assistant will conquer our internal space. They can not only control multimedia equipment through voice, but also through home automation, and (almost) solve all problems. However, for users, the main consideration is to have a system to turn on the microphone at home. For the user's reasonable consideration, the manufacturer has integrated physical buttons, which theoretically can prevent eavesdropping. But obviously, for the two University of Chicago computer science professors who are developing smart devices, this precautionary measure is not enough.

With the support of the assistant professor, interference with the bracelet made Mr. Zhao and Ms. Zheng imagine and design a bracelet that might damage the nearby microphone. The suspicious system includes 24 speakers that emit ultrasonic waves to block the microphone on the connected speakers.

As the New York Times reported, Northeastern University researchers David Choffnes and Daniel Dubois recently conducted an experiment to analyze the trigger conditions when speakers are connected in a room where the TV is turned on. As a result, there are many "accidental" eavesdropping, and the concern for privacy is reasonable.

A device like this portable jammer wristband can provide users with a reassuring solution. However, we can assume that it will also affect the microphone of the smartphone...this may soon become a problem. Pets also have ultrasound problems, which humans cannot hear, but they can cause discomfort to dogs.