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It's Possible that the Facebook App is Listening To You, Cambridge Analytica Whistleblower Says (theoutline.com)
Jon Christian, writing for The Outline: During an appearance before a committee of U.K. lawmakers today, Cambridge Analytica whistleblower Christopher Wylie breathed new life into longstanding rumors that the Facebook app listens to its users in order to target advertisements. Damian Collins, a member of parliament who chaired the committee, asked whether the Facebook app might listen to what users are discussing and use it to prioritize certain ads.
"That's probably a question for Facebook," Wylie said. But, Wylie said in a meandering reply, it's possible that Facebook and other smartphone apps are listening in for reasons other than speech recognition. Specifically, he said, they might be trying to ascertain what type of environment a user is in in order to "improve the contextual value of the advertising itself. There's audio that could be useful just in terms of, are you in an office environment, are you outside, are you watching TV, what are you doing right now?" Wylie said, without elaborating on how that information could help target ads.
"That's probably a question for Facebook," Wylie said. But, Wylie said in a meandering reply, it's possible that Facebook and other smartphone apps are listening in for reasons other than speech recognition. Specifically, he said, they might be trying to ascertain what type of environment a user is in in order to "improve the contextual value of the advertising itself. There's audio that could be useful just in terms of, are you in an office environment, are you outside, are you watching TV, what are you doing right now?" Wylie said, without elaborating on how that information could help target ads.
If this were possible it would be an incredible technical feat.
Phone batteries don't provide enough energy to constantly record audio and look for speech, then transmit it back to Facebook or do speech recognition on the device. Not to mention the effect on your data allowance.
The way those always on "hay Siri" type things work is to have a special ultra low power chip that recognizes just "hay" and then wakes the phone to process the rest, with an appreciable effect on battery life.
I think more likely is that they do a couple of things. Firstly they are really good at connecting you with your close friend's desire to buy red cookware, and the app noticed that you were near each other with the usual location services so there is a fair chance you might be interested in red cookware too now. Creepy as hell still but based on established, practical techniques.
The other thing they could be doing is a little bit of Shazam style audio recognition. Shazam is an app that listens to a song and tells you what it is. Google has a similar feature on the Pixel 2 that uses audio fingerprint data stored on the phone, so it doesn't need to transmit any audio. Facebook probably only care about fingerprinting a small number of different TV/radio ads and detecting them when the app is open. Again, that's feasible with current tech and won't completely destroy your battery life, or give the game away by transmitting chunks of audio data periodically.
const int one = 65536; (Silvermoon, Texture.cs)
SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
Last week I was debating getting a pizza and then drove by a billboard advertising pizza. It was a bit unsettling because the whole discussion took place in my mind.