Lukasz Olejnik (@LukaszOlejnik@Mastodon.Social)@lukOlejnikFacebook patents audio fingerprinting (identified with users) of content emitted by house-hold devices (TV) and recored by smartphones using a microphone. Reminds of SilverPush? http://freepatentsonline.com/20180167677.pdf10:44 AM · Jun 29, 201824 Retweets4 Quotes24 Likes