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by just150e 4090 days ago
Did you read those docs?

> Note: You may need to increase your iPhone volume, since Dash Button uses ultrasonic tones to sync with your iPhone during setup. If prompted, drag the volume slider to the recommended level, at or above where it says Best.

Ultrasonic tone sync?
5 comments
zaroth 4090 days ago
I actually wrote a library that does this, FSK to WAV and back is just a few lines of code, and fairly reliable. There are even Javascript libraries that can do it.

I think it probably is real, it just shouldn't be. :-/

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JoblessWonder 4090 days ago
Isn't that what Clinkle was supposed to be using? It was supposed to be the hot new tech that could replace NFC. Or something or other...

[1] http://www.thewire.com/technology/2013/07/what-is-clinkle/66...

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cbhl 4089 days ago
That's actually pretty established technology nowadays. I'm not surprised they're using it.
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techstrategist 4090 days ago
Ultrasonic communication is also used by some of the 2nd screen tv apps.
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kevinoconnor7 4090 days ago
Doesn't the Chromecast have that capability?
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