How to block the ultrasonic signals you didn’t know were tracking you

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. Now marketers have been experimenting with combining those web-based and audio approaches to track consumers in another disturbingly science fictional way: with audio signals your phone can hear, but you can’t.

Tags: 

Read more: How to block the ultrasonic signals you didn’t know were tracking you

Story added 4. November 2016, content source with full text you can find at link above.