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by svnt
43 days ago
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This is the big constraint: > 2) Range hardcapped at ~1m due to how ultrasound works, you can't centralize detection. Their answer is to give everyone in the household a wearable receiver, which is eeeeeeeh idk, doesn't look consumer-friendly to me. Sure yes if you could do this with an always-listening smartphone or smartwatch that would be workable, but even then it constrains it to an occupant-activity detector. Fixing that would require in the best case prompting an app install when visitors arrive. And still it is deaf to any other changes such as a door closing in the wind. All possible, but feels several technosocial cycles away. Interesting to think about anyway. |
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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
"Why does Google flush all of my donors' smart toilets whenever I tap my champagne glass before a toast?"