The author has done a lot of work, but the title of this article is very misleading. There's no monitoring happening on the watch, it's just used
to display the results that are collected by another device.
Agreed, I would have preferred a title like 'receiving glucose readings on watch'.
I already have my readings being sent from my Libre sensor to my phone, but thought this was going to be a story about true non invasive monitoring (many companies have been supposedly developing tech to read glucose from the skin surface, though afaik none actually work yet)
Well even if another device is collecting the data, it is being monitored on the watch.. if it was being fed to a computer it would just be being watched on a monitor.