Because it changes a lot depeding of the user, is it possible to calibrate it over time ?
For example, to give you good results, it would need X nights before giving you real results.
The application Sleep Cycle needs 5 nights before giving you a score on your night. Maybe you could analyze heart rate for several nights so you could discover the heart pattern of the user.
I'm also thinking of beddit (http://www.beddit.com). They use heart rate and motion with their strap. I don't know how they correlate all this but at least it's doable
For example, to give you good results, it would need X nights before giving you real results.
The application Sleep Cycle needs 5 nights before giving you a score on your night. Maybe you could analyze heart rate for several nights so you could discover the heart pattern of the user.
I'm also thinking of beddit (http://www.beddit.com). They use heart rate and motion with their strap. I don't know how they correlate all this but at least it's doable