Bracelet of SilenceFebruary 2020
Posted at 15:09h
Are you still getting surprised when you see the advertisement of a product on your phone right after you talked about it with your friends? Let’s share with you that Facebook has received a patent for this.
Yes, it may be a little bit scary. It seems professors of Chicago University thought the same way because they developed a bracelet that blocks spy microphones and ensures a private conversation.
The bracelet which is named “Bracelet of Silence” and looks like a smart watch has thorny transducer and 24 speakers that transmit ultrasonic waves. It makes impossible for someone to listen the current environment in secret thanks to the noises coming out from the speakers on the bracelet that only some animals can hear.