What is your source for the tech being "ready"? I'm sure they are trying but it is extremely difficult. Also, CGM will require FDA approval. You can't make a mistake or people die. If your measured pulse or respiratory rate is wrong, it is nbd. If your steps are wrong, who cares. Glucose is different. We are just now getting to CGMs that don't require frequent recalibration.

Why will people die, it isn't an automatic insulin pump, surely the same issues exist in pricks and existing cgm tech at existing reliability levels. I'm mobile at the moment but they was an article about only one company would provide the cgm tech and apple had invested, there some reason too the analyst suspect cgm - I've made it sound quite flimsy but it wasn't (or at least didn't sound so) will find and report back.

Perhaps same with pricking, if it doesn't correlate with how you're feeling test again, cgm can provide a guide and if in doubt prick. I still think at 99% confidence it would be game changing

Of course it would be game changing if it got to 99+% but I don't think we are there yet. If people don't take any other testing supplies and the watch isn't accurate, they they could go hypo easily especially during exercise and not try to remedy it until too late. If a single person dies trusting the watch's cgm it will be unlike any other testing device failing.