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The healthcare system is transforming to a patient-centered model and opening up avenues of innovation. The availability and exchange of patient health information is integral to that transformation. The government is driving the transformation in part by opening up health data to providers and requiring providers make complete electronic health records (EHRs) available to patients. New kinds of health information are being created in the private sector as companies develop different forms of personal health record (PHR) management platforms, including smartphone applications and wearable devices that patients are using to track food consumption, exercise, blood pressure, and a variety of other health metrics.