With Apple hiring numerous medical professionals for its rumored iWatch project, and many new fitness and other types of health-related devices coming to market, wearable health-data tracking devices are proving extremely popular. A new device launching today on IndieGogo is SunSprite, a wearable device that measures the amount of visible and UV light that the wearer is exposed to in order to help users avoid health issues related to a lack of exposure to sunlight, such as seasonal affective disorder or winter depression. The solar-powered SunSprite tracks the amou
