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A comment on Quiet for Android – TCP over sound. Parent comment

Re:Quiet for Android – TCP over sound by icebraining on Saturday February 10, 2018 @04:48AM (#16346626)
It's already becoming common. Chromecast has used it since 2014, and I just bought a $30 Wifi camera on Aliexpress that also uses ultrasounds for the initial configuration.
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