Found in 2 comments on Hacker News
steventruong · 2013-02-11
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A quick search yields: http://www.amazon.com/Running-Lean-Iterate-Works-OReilly/dp/...
I'd even go as far you say, use an existing platform like Amazon's Alexa with their hardware to start.
Reading a books like "Calm Technology" and books on lean startups would be good too.
Books: http://www.amazon.com/Calm-Technology-Principles-Patterns-No...
http://www.amazon.com/Running-Lean-Iterate-Works-OReilly/dp/...