A two-inch accelerometerequipped sensor from Fitbit lets health-conscious people track their physical activity and the calories they burn; slipped into a wristband to monitor wrist tremors, it can even gauge quality of sleep. A base station connected to the Internet retrieves data wirelessly from the device and uploads it to the Web. Online, users can measure calories consumed against calories burned, or compare their physical activity with that of friends and family.
Credit: Courtesy of Fitbit
Other products in this section:
Subscribe to Continue Reading
Uh oh–you've read all of your free articles for this month.
How DARPA Took On the Twitter Bot Menace with One Hand Behind Its Back
When DARPA ran a competition to find Twitter bots designed to influence online debates, it inspired a new generation of anti-bot strategies.
How One Intelligent Machine Learned to Recognize Human Emotions
Nobody knew how to identify people’s emotional states by looking at their brain waves. Then a machine learning algorithm stepped in.
How an AI Algorithm Learned to Write Political Speeches
Political speeches are often written for politicians by trusted aides and confidantes. Could an AI algorithm do as well?