Take a count of how many microphones are around your right now -- your phone, of course, which is probably always listening, and your laptop most likely. Your TV? Perhaps, if it's new enough. Your wireless speaker probably has a microphone, too, for speakerphone functions. Your smartwatch might have a microphone. There are even smart refrigerators cropping up with integrated microphones (for voice commands, not spying), and, of course, dedicated personal assistants like Amazon Echo and Tap. How many of those microphones has the FBI tapped?