Possibility to record ambient sounds secretly by Facebook on a TV advertisement, 'Sound not heard by people' on Facebook

by rawpixel

It became clear that Facebook has developed an amazing software to confidentially record audio data on a user's smartphone by interwoven sounds that can not be heard by human ears in TV advertisements It is.

BROADCAST CONTENT VIEW ANALYSIS BASED ON AMBIENT AUDIO RECORDING
(PDF) http://www.freepatentsonline.com/20180167677.pdf

Facebook wants to hide messages in TV ads to make phones record audio | Metro News
https://metro.co.uk/2018/06/22/facebook-wants-hide-inaudible-messages-tv-ads-force-phone-record-audio-7652112/

From a patent application published on 14th June 2018, it is clear that Facebook's research department is developing a system that can command secretly "to record surrounding sound" to mobile phones It is becoming. SNS such as Facebook guesses things that individuals are interested by analyzing "user's conversation" that is spread on the platform, and displays advertisements suitable for each user. But Facebook is comprehending not only texts on SNS but also eavesdropping to everyday conversation, so that it is aimed at further improving the accuracy of advertisement display, which is popular as a British free daily newspaper High metro points out.

by Marc Schäfer

According to a patent application, Facebook develops "digital sound beyond the human audible band" with TV advertisement, and the technique of recording ambient sound by smartphone heard it. Facebook says that "recording noise sounds of machines, human movements and conversations in distant places, from clear sounds to subtle sounds in specific places". A patent application by Facebook is called "broadcast content view analysis based on ambient audio recording".

FIG. 8 is a diagram showing how a TV transmits a message secretly toward smartphone software, which was attached to a patent application.

Analyze the recorded voice data, identify the information about the user, and the data is stored on the online system. The recorded voice data seems to be used to investigate "Who viewed the TV advertisement?" And "What kind of content did the person use?"

"Digital sound beyond the human audible band" that is flown in TV advertisements

Also, if you analyze the recorded voice data in detail, the advertiser who issued the TV advertisement "Was the user looking at the video so as to grip in front of the TV in the advertisement" or " Were you doing the things of? "And so on, and metro should point out. For example, how to guess the behavior of the user only by the voice data is, for example, "If you can not hear the sound of the recorded voice data, or if you can hear the sound far away, make sure that the user is in a remote place If it is clearly recorded at a loud volume, it will be watching advertisements firmly in front of the TV, "the Metro wrote.

by Grant

By knowing about advertisements that users like dirty on the TV and what ads they are going to leave from TV as much as to say nothing, Facebook can also display ads suitable for users on the screen of smartphones There are also indications that it will become like.

However, Facebook does not mention, for example, "stealing the user's private life, infringing on privacy, recording conversations between intimate individuals, making advertisements full of households" and so on, only to the last A patent application has been submitted as a system called "broadcast content view analysis based on ambient audio recording". Gizmodo , an overseas media also writes that "patent applications are written in legal terms, and how audio data will be handled is somewhat ambiguous."