Solar recharge

We need sunlight to generate Vitamin D. Using the light sensor hexiwear can work out how much exposure to bright light we have had. knowing daylight hours/weather will allow us to display how we are tracking on a given day. Haptic feedback will warn when we fall behind. (Think - it is noon, you should be at 50% but you are only at 30% - GO OUTSIDE!!) OR when we exceed (UV is a killer too)