Today I Learned TVs emit a tone during ad breaks that are inaudible to humans but that smartphones are listening for; now corporate entities can link the tv & phone as belonging to the same person. It means govt entities can play a tone thru the TV & ping all the phones in the room, identifying the whole group. kimcampion.com Posted on September 24, 2019 by kimcampionMay 12, 2022 sources: https://www.digitaltrends.com/mobile/is-your-smartphone-listening-to-your-conversations/ https://www.reddit.com/r/todayilearned/comments/d8ox5b/til_tvs_emit_a_tone_during_ad_breaks_that_are/
