[jfrunyon]

They get the data from people who have opted in to providing the data to them. https://support.google.com/accounts/answer/3467281?hl=en#loc...

If you don't want them to have data for something which is only detectible on your own land, just turn off Google's location services. Of course, the odds are very high that it's not only detectible on your own land.

[Retric]

Turn off location services isn’t enough. You would also need to never invite anyone over or call a freaking plumber etc.

That’s the problem it isn’t something most people are aware of let alone have much of a choice about. This is Google deciding it’s probably not illegal to spy on people in their own homes.

Sure, their probably not actually listening to conversation, but consider if they where would you consider they where spying if this was the level of consent given?

[jfrunyon]

There is no spying involved. There is no expectation of privacy in data that you broadcast publicly, using public airwaves, which are mandated as public by the laws of literally whatever country you live in.