Did you know your phone is a really good listener? Apps on your phone might be sending and receiving data over ultrasound. Ultrasonic communication is used for everything from tracking your daily habits to enabling light shows at music festivals. We hear from <a href="http://privacylab.yale.edu">Yale Privacy Lab's</a> Sean O’Brien and Michael Kwet, and privacy and technology counsel <a href="https://consumersunion.org/experts/katie-mcinnis/">Katie McInnis</a>. We also discuss the more positive uses of data over sound with <a href="http://LISNR.com">LISNR</a> CEO and co-founder Rodney Williams.​​​​​​​  Twenty Thousand Hertz is produced out of the studios of <a href="http://defactosound.com/">Defacto Sound</a> and hosted by <a href="http://dallastaylor.com/">Dallas Taylor</a>. Follow Dallas on <a href="https://www.instagram.com/dallastaylor.wav">Instagram</a>, <a href="https://www.tiktok.com/@dallastaylor.wav">TikTok</a>, <a href="https://www.youtube.com/@dallas_taylor">YouTube</a> and <a href="https://www.linkedin.com/in/dallastaylor/">LinkedIn</a>.Join our community on <a href="https://www.reddit.com/r/20k/">Reddit</a> and follow us on <a href="https://www.facebook.com/20korg/">Facebook</a>.Consider supporting the show at <a href="http://donate.20k.org/">donate.20k.org</a> Episode transcript, music, and credits can be found here: <a href="https://www.20k.org/episodes/ultrasonictracking">https://www.20k.org/episodes/ultrasonictracking</a> Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Twenty Thousand Hertz

Ultrasonic Tracking: Are our phones really listening to us?

Sound, Uncovered. The secrets, stories, and science behind what you hear.