Google Home, Amazon Echo, and others pervade our homes now, and just like the talking Barbie example; they allow microphones to sense and provide detailed acoustic and voice data from within our homes. Frequently activated by key words, these devices respond to user commands, invoking manufacturer and third-party APIs that initiate various home monitoring and control functions, web services, and media access.
While sound recording may be of limited duration, the devices still have enormous potential to record some minor action, seemingly insignificant, that helps establish the facts of a case.