Comment horse needle incoming (Score 2) 37
It seems like this is based on the same operating principle as their CGM devices. It's buried a bit on their website, but these things utilize a needle to jab the actual electronic sensor into your skin, which is part of the process to apply the wearable. They claim it's "painless", but I'd imagine it probably feels something like having a splinter stuck in your arm.
You've gotta remember, people with diabetes are regularly stabbing their fingers to check their blood sugar, so developing something of a higher tolerance for that sort of discomfort probably comes with the territory. I don't think this really would have wide appeal for folks who are just trying to monitor their diet, unless a less invasive sort of sensing method could be developed.