There's a lot of excitement about all the new artificial intelligence technology hitting the market -- like Amazon's Echo and Google's Home smart speakers, among many other products. However, there's also growing concern over how these devices may invade our privacy. These AI devices are designed for use throughout our homes -- and despite the companies' assurances to the contrary, some people worry that they could be listening to every word we utter. Granted, they have to listen when we want them to give us answers or carry out tasks.