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The BACTrack Vio keychain breathalyzer and app on the iPhone at NPR headquarters in Washington, D.C. A public health researcher says tools like this could help people make better decisions about alcohol use.
July 25, 2014 Some of us now monitor our steps, sleep and calorie intake with wristbands and apps. So why not track blood-alcohol levels? We explore the next frontier in the self-measurement movement.
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