The company introduced a wristband for health and fitness tracking called Halo, which can detect emotion in voice by analyzing speech and calculate body fat percentage using a smartphone’s camera. (The Verge)

Talking point: With Halo, Amazon is joining a growing wearables industry and competing with Apple and Google, which acquired Fitbit last year and is facing antitrust investigations in Europe and Australia over the deal and its impact on data. Amazon said Halo “is not a medical device” and that privacy was built into Halo. The company said it will post details about how every piece of data is stored and how to delete it, noting that the data from the service will never be used for advertising.