Google says Nest’s built-in mic not listed in specs was not meant to be secret

Re:Google says Nest’s built-in mic not listed in specs was n... by uptown on Wednesday February 20, 2019 @12:40PM (#19209910)

One anecdote I remember from the Steve Jobs biography was how he'd discovered that a speaker could also be used as a microphone. Is there any risk of some of these devices using that capability to convert their audio output tech into audio input tech?

[ Parent | on HN ]

Re:Google says Nest’s built-in mic not listed in specs was n... by zeroego on Wednesday February 20, 2019 @12:51PM (#19210053)

I don't have a direct answer to your question, but it piqued my curiosity so I did a quick search. I found this informative little post:

https://security.stackexchange.com/questions/154343/can-a-sp...

[ Parent | on HN ]

Re:Google says Nest’s built-in mic not listed in specs was n... by gojomo on Wednesday February 20, 2019 @12:55PM (#19210116)

Some on-chip gyros/accelerometers can also work as microphones – and may be even harder to separate those via an external cut-off switch.

[ Parent | on HN ]

Re:Google says Nest’s built-in mic not listed in specs was n... by jhayward on Wednesday February 20, 2019 @03:21PM (#19211594)

So can capacitors - a common factor to avoid in amplifier design - and at the limit, so can just about any semiconductor.

[ Parent | on HN ]