Vessyl is the smart cup that knows exactly what you're drinking

Vessyl is a cup that recognizes any beverage you pour into it, displays its nutritional content, and syncs all your drinking habits to your smartphone. Vessyl can tell the difference between strong and weak coffee, noting caffeine disparities. It can even measure the sugar, protein, calories, fat, and caffeine inside any beverage you pour into it, mass-produced or homemade.

As you go about your day, the device tracks how much you’re drinking, and when you tilt Vessyl to its back, it displays a bright blue line that rises and falls to indicate your hydration level. Preorders of Vessyl will be available in early 2015 at a cost of $99.

theverge.com