[fancy_betta]

This thing doesn't need to be anywhere near that accurate to be useful to someone. Fitness monitors are already pretty inaccurate but they're useful to get a general idea of your activity levels from day to day.

Trying to guess how many calories are in your food and adding them up each day isn't accurate, so a device that tries to measure it automatically based on your physiology only has to be that accurate. Maybe within 30% would still be useful to people tracking their fitness.

Obviously someone who is tracking their glucose or caloric intake for medical reasons should use FDA-approved medical devices and techniques for that, but those people aren't the target audience for this device.

I have no idea if this thing is legit or not, but calling it a scam because accurate non-invasive glucose measurement is a holy grail is completely missing the point of what the device is and what it's for.