As much as I think something like this would be a huge benefit, we might need more regulation for these bio-monitoring devices that all seem pretty unreliable i

As much as I think something like this would be a huge benefit, we might need more regulation for these bio-monitoring devices that all seem pretty unreliable in aggregate. In my experience sleep trackers, body fat % scales, calorie trackers, even heart rate meters are 'okay' but have all given ratings that were so bad that I just can trust them. A tracked yes or no question like, "Do I feel like I got good sleep last night?" seems way better than a sleeptracker that can basically only be relied on to tell if I'm in the bed or not. There should be some requirement that you study and publish the correlation of your device to the current medical gold standard for a reasonable sized population. So a sleep-lab sleep score vs a mattress or fitbit tracked sleep score. Or a body-scale fat% compared to a hydrostatic weighing.