Many glucose monitors today are invasive and need to be inserted into the skin. Some observers see a non-invasive glucose monitor on wearable gear as something that could be transformative — but Hale warns this is a difficult goal to achieve.
"The idea that a wearable [device] will get there, I think, has definitely been a Holy Grail, and like the Holy Grail, they may never find it, because it's a very difficult problem to solve with any kind of accuracy," Hale said.
"Never say never. Certainly, technology continues to advance and all the capabilities continue to advance," he added.