These gadgets are always listening

A new wave of consumer electronics for the home are programmed to answer your questions or alert you if something sounds out of the ordinary. Michael Casey helps us understand the trend towards gadgets that are always listening.
The Amazon Echo listens to everything that happens in your home.

From Amazon Echo, to Point, to Withings Home, a new wave of consumer electronics are always listening to you. These devices use sophisticated microphones, and can be programmed to answer questions, or alert you if something sounds out of the ordinary. Nora talks to Michael Casey, a professor of music and computer science at Dartmouth College, to understand the trend towards always-listening gadgets.

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