Amazon started selling a wrist band Thursday that tracks workouts, sleep and body fat. It can also listen to your voice all day and tell you when you sounded happy or sad. The fitness tracker is sure to give the company a wealth of new information about its customers.
source https://www.seattletimes.com/business/amazon-has-a-new-fitness-tracker-and-wants-to-get-personal/?utm_source=RSS&utm_medium=Referral&utm_campaign=RSS_technology
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