Variations might be better for underwater or surface impact detection, but for now, congrats to them on the reinvention the 1950s Zenith ultrasonic remote. htt

Variations might be better for underwater or surface impact detection, but for now, congrats to them on the reinvention the 1950s Zenith ultrasonic remote. https://www.guinnessworldrecords.com/world-records/385428-first-ultrasound-remote-control-for-tv-sets https://www.guinnessworldrecords.com/world-records/385428-fi... My grandfather used to love to show off how he could jingle his keys to turn on his TV. Also, without regulating the ultrasonic frequency space, I imagine this would be prone to interference from other devices already employing ultrasoud, today, like Google Home. https://support.google.com/googlenest/answer/9509981?hl=en https://support.google.com/googlenest/answer/9509981?hl=en "Why does Google flush all of my donors' smart toilets whenever I tap my champagne glass before a toast?"