Wearable fitness trackers have widened their scope of health readings and seem to be heading in a direction where they can offer more personalized, substantial health data to users. Along with measuring steps and heart rate, fitness trackers today can measure blood oxygen saturation, sleep patterns, and even mental wellness (one Fitbit product measures changes in sweat to gauge how the body responds to stress). Apple is reportedly in the early stages developing Apple Watch tech that monitors blood sugar levels. According to CNET, the medical and tech communities seem to share a common goal in progressing wearables to help people take better care of themselves between doctor visits.
