Ars Technica - Risk Assessment: How to block the ultrasonic signals you didn’t know were tracking you

Enlarge Dystopian corporate surveillance threats today come at us from all directions. Companies offer “always-on” devices that listen for our voice commands, and marketers follow us around the web to create personalized user profiles so they can (maybe) show us ads we’ll actually click.

Article Link: http://arstechnica.com/security/2016/11/how-to-block-the-ultrasonic-signals-you-didnt-know-were-tracking-you/
Credit to: https://cert.europa.eu