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"Nothing is recorded or sent across the network. Peace of mind, without giving up on privacy."

Respect this a lot and is a major selling point for me. If the sound analysis/processing is not done over the wire (assuming on the device) will there be a way to allow for publicly produce events (i.e. integration into systems like IFTTT, etc)?

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Yep, the sound analysis is done on the device. We're working with IFTTT and others on integration, and there'll be an open API as well.

Can the firmware be updated over the internet, and can the device theoretically send sound over internet if the firmware is changed? If yes, that would be a dealbreaker for me (because, you know, crackers and the NSA).

https://news.ycombinator.com/item?id=8550271

That would require breaking the firmware encryption and signing schemes of multiple physically isolated processors, and even then it would be limited by the power budget, meaning transmitting audio data would drain the batteries very quickly. So, it is not completely impossible (what is, these days?) but extremely implausible and at the same time rather easy to detect; I'd say your (smart)phone is a much better attack vector ;)

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