|Tinke Blood Sensor for iPhone|
there were a good number of them. I've had enough of smart watches on the first day: they all looked bulky, and none looked like it can be worn comfortably on a daily basis, or be worn by a woman.
I did like seeing sensors integrated into shirts, allowing you to improve your athletic regimen on one end of the spectrum, and predict an impending stroke or heart attack on the other. Imagine a day in the (not too distant) future, when your shirt will signal you to take a drink of water, or call a doctor immediately.