A Juiced-Up Cup

Vessyl, a new glass-like smart cup designed by San Francisco–based company Mark One and entrepreneur Justin Lee, will identify and track the consumption of the caffeine, sugar, protein, and calories in any liquid poured into the 13-ounce holder through a corresponding iOS or Android smartphone app. Designed as a way to optimize individual hydration, the Vessyl ($99 preorder, $199 retail) collects the molecular data of a beverage—anything from bottled teas, sodas, and alcohol to homemade juices and smoothies—vi…

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