![Activate this bracelet with 24 speakers — developed by married University of Chicago professors — and Alexa can't eavesdrop – Chicago Tribune Activate this bracelet with 24 speakers — developed by married University of Chicago professors — and Alexa can't eavesdrop – Chicago Tribune](https://i.ytimg.com/vi/-43-4LfqiTA/hqdefault.jpg)
Activate this bracelet with 24 speakers — developed by married University of Chicago professors — and Alexa can't eavesdrop – Chicago Tribune
![Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online](https://i.dailymail.co.uk/1s/2020/02/17/18/24848896-0-image-a-25_1581963453523.jpg)
Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online
![Joe McCartney on Twitter: "Activate This 'Bracelet of Silence,' and Alexa Can't Eavesdrop. Very Maxwell Smart tech. 📷New York Times. https://t.co/qtfTOsmim4" / Twitter Joe McCartney on Twitter: "Activate This 'Bracelet of Silence,' and Alexa Can't Eavesdrop. Very Maxwell Smart tech. 📷New York Times. https://t.co/qtfTOsmim4" / Twitter](https://pbs.twimg.com/media/EQ0hvSmXsAAHKgu.jpg)
Joe McCartney on Twitter: "Activate This 'Bracelet of Silence,' and Alexa Can't Eavesdrop. Very Maxwell Smart tech. 📷New York Times. https://t.co/qtfTOsmim4" / Twitter
![This “Bracelet of Silence” actively blocks Alexa and Siri from hearing your conversations - Yanko Design This “Bracelet of Silence” actively blocks Alexa and Siri from hearing your conversations - Yanko Design](https://www.yankodesign.com/images/design_news/2020/02/auto-draft/smart_mic_jammer_5.jpg)
This “Bracelet of Silence” actively blocks Alexa and Siri from hearing your conversations - Yanko Design
![Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2018/01/16/11/483029AB00000578-0-image-m-4_1516103629522.jpg)
Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online
![Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online Scientist builds bracelet that jams microphones on smart speakers like Alexa and Siri | Daily Mail Online](https://i.dailymail.co.uk/1s/2020/02/17/18/24848974-8013277-image-a-26_1581963550710.jpg)