Privacy experts are keeping a close watch on the case of a Bentonville, Arkansas, man who was charged with murder after prosecutors obtained a warrant to receive data from his Amazon Echo, a voice-activated device that is always listening and often recording. James Andrew Bates says he’s innocent of the murder of Victor Collins, who was found strangled in Bates’s hot tub. Prosecutors hope to search audio recordings on Bates’s Amazon Echo for clues. So far, lawyers for Amazon have refused to comply with the warrant, but the case has drawn national attention and alarmed civil liberties groups. We speak with Marc Rotenberg, executive director of the Electronic Privacy Information Center.