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You can't defeat ultrasound advertising!

You can't defeat ultrasound advertising!

Update: 2020-05-31
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Description

Ultrasound technology embeds high-frequency tones that are inaudible to humans in advertisements, web pages, and even physical locations like retail stores. These ultrasound "beacons" emit their audio sequences with speakers, and almost any device microphone—like those accessed by an app on a smartphone or tablet—can detect the signal and start to put together a picture of what ads you've seen, what sites you've perused, and even where you've been. Sean Patterson and Matthias Subik discuss implications.
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You can't defeat ultrasound advertising!

You can't defeat ultrasound advertising!

Euro Digital Partners