When smart devices watch you, what do they do with the data?

Not all voice assistants can handle the same requests. We put Siri, Alexa and Google to the test. Think of all the things a microphone can pick up: voices, noises, whispers, conversations, arguments, confessions – even people alone, in a room, mumbling to themselves. Think of all the things you say in a private space, all the weird things you do. Once those sounds have been saved, that data can be stored, edited, and manipulated and shared.