Facebook Confirms That It Tracks Mouse Movements
Shweta Ganjoo (via Hacker News):
The social media giant in a 225-page document responding to a set of 2,000 questions by the US Senate Committee on Judiciary admitted that it collects information from and about computers, phones, and connected devices, including mouse, that users use with its various services and that it combines this information to give users a personalised content.
Facebook said that it tracks mouse movements to help its algorithm distinguish between humans and bots. Tracking mouse movements also helps the social media giant, which has been under fire for its data privacy practices, to also determine if the window is foregrounded or backgrounded.
I have always assumed that Facebook uses heat maps to track what is under your pointer. Doesn’t every serious site do that to gauge user behavior, interest and interface utilization? I guess the difference is FB is putting it in an available data set along with everything else about consumers’ individual lives.
More interesting is “a patent held by the company states that the Facebook app uses voice recognition algorithm, which uses audio recorded by the microphones, to modify the ranking scores of stories in users News Feed.” and their speculation that Facebook could soon reveal details about their use of surreptitiously recorded user audio.
Facebook makes a curiously specific denial about audio, which is that it is not used for advertising. Considering their entire business is basically advertising, what does that leave? But all they mean is ad selection. When they were found to be recording audio during the posting of statuses, I believe they claimed it it was so they could recognize the music you were listening to, and know something about your mood. So for a long time, I have thought that they use audio to select other content, like friend suggestions, or to inform the selection of stories that appear on your newsfeed.
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Javascript was a mistake.
I have never understood why Safari allows a non-front web site to track the mouse (or pretty much anything else really). It always disturbs me when I move my mouse around and some web site in the background resizes some hover bar in response.