This is simply mind-blowing. The Vessyl, a cup that knows exactly what you're drinking and helps you keep track of your liquid intake. Check the video, it's amazing. Here is an excerpt from a review The Verge did.
"Let's cut to the chase: while I only had an hour with a Vessyl prototype, I tried nearly a dozen beverages in it -- and it successfully identified all of them. Within 10 seconds, the device, which currently resembles more of a Thermos than a finished product, recognized Crush orange soda, Vitamin Water XXX, Tropicana orange juice, Gatorade Cool Blue, plain-old water, and a few other beverages, all by name. Yes, this cup knows the difference between Gatorade Cool Blue and Glacier Freeze.
Vessyl can tell the difference between strong and weak coffee, Lee says, 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."
Vessyl can be pre-ordered for $99, but will later retail for $199. It is available in three different colors (Shadow, Snow, and Steam) along with several accent lid colors, and it is expected to begin shipping in early 2015.