An emerging tracking technique uses inaudible sounds to communicate with apps on your phone and track you. Here’s how to stop it. The post How to Block the Ultrasonic Signals You Didn’t Know Were Tracking You appeared first on WIRED. from WIRED http://ift.tt/2fgrRZT via techgadgettalk.com

via How to Block the Ultrasonic Signals You Didn’t Know Were Tracking You — Prasad’s Rambles