You’ve probably already noticed that smartphones hear a lot more than their manufacturers claim they do. Have you ever discussed a new tech product with a colleague only to start seeing ads for that product in apps like Instagram and Facebook? It’s spooky when it happens. And while people have shared anecdotes like this over the past several years, no one has ever really proven that phones eavesdrop on us like that. Phones aren’t allowed to eavesdrop on us like that…...

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