Today's Hard|Forum Post
Today's Hard|Forum Post

Saturday November 14, 2015

Ads Using Inaudible Sound To Link Your Phone, TV, Tablet, And PC

Some of this reads like it came straight out of a conspiracist’s notebook. Thanks to those who sent this in.

آ…ultrasonic pitches are embedded into TV commercials or are played when a user encounters an ad displayed in a computer browser. While the sound can't be heard by the human ear, nearby tablets and smartphones can detect it. When they do, browser cookies can now pair a single user to multiple devices and keep track of what TV commercials the person sees, how long the person watches the ads, and whether the person acts on the ads by doing a Web search or buying a product.