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“The harsh truth is that Facebook doesn’t need to perform technical miracles to target you via weak signals. It’s got much better ways to do so already. Not every spookily accurate ad you see is a pure figment of your cognitive biases. Remember, Facebook can find you on whatever device you’ve ever checked Facebook on. It can exploit everything that retailers know about you, and even sometimes track your in-store, cash-only purchases; that loyalty discount card is tied to a phone number or email for a reason. Before you stoke your Facebook rage too much, know that Twitter and LinkedIn do this as well, and that Facebook copied the concept of ‘data onboarding’ from the greater ad tech world, which in turn drafted off of decades of direct-mail consumer marketing. It’s hard to escape the modern Advertising Industrial Complex.”

Source : Facebook Isn’t Listening Through Your Phone’s Microphone. It Doesn’t Have To | WIRED