Thx for the link. It's interesting that a couple of years ago this technology would have required thousands of dollars of chemistry equipment and now you can build it into a cup.
I don't think the chemistry side of the technology was what would have made this difficult "a couple years ago." I think what has made this possible today is the slew of "connected" devices before this like the fitness bands.
And honestly, I believe it is the entrepreneur's imagination, the market and people's perception that has really caught up to technology that already existed.
A $200 cup. http://www.cnet.com/uk/news/vessyl-smart-cup-knows-the-diffe...