Amazon Echo and Google Home—and other devices that have Alexa and Google Assistant built in—are some of the most promising new technologies to come along in years. And they’re genuinely useful to have around, whether it’s to settle a bet or help out with a recipe. But it can also feel a little creepy to have a speaker in your house that’s always listening. What exactly is it doing with that info? Where does it go? Here’s the good news.