Comment by Supermancho
13 hours ago
Knowing how digital advertising works, it's more likely that a payload is delivered to the phone in some app or by os or by browser that has a dictionary of keywords paid for to be associated with specific ad campaigns. If the device detects that term (via sound, search, or media) it triggers a message home as an analytics to target you and your device now calls for those campaigns.
If it works like that, why aren't the app companies describing exactly how it works to advertisers in order to earn their business?
They describe how everything else they do works in great detail if you're someone who buys ads.