Oh yeah, something like
this dexcom glucose monitor works with a phone, or one of those Dick Tracy watches they have now.
Rather than a finger stick, it is a pad you stick on, lasts a week maybe, something like that. Constant monitor, pick up your phone, 14.7, he has been to Tim Horton's., 3.0 and grumpy, he should have some juice right now, maybe a hard boiled egg.
I have badgered my mother to get one for dad, but she does not want to watch it that close. He abused himself for years, it is what it is she says. She checks prior to giving him meds, naturally. He smoked, drank martinis when he played cards, ate a lot and did not exercise enough and is 87. Nobody in his family ever took care of themselves, all lived to ripe old ages.
I do not count golf using a cart as exercise