Vitalik Buterin
@vitalik.eth
Device-to-device audio communication (think QR codes, but made out of sound) seems very underrated. Much better UX than QR codes or NFC because you don't have to worry about putting your phone in the exactly right place or pointing it in the right direction. Anyone here with more detailed takes on this?
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mason
@masonic
Data you can put through this would be tiny given audio is up to 20kHz and WiFi is 2.4-5GHz. Perhaps good for authentication or one-time actions but not for streaming.
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