Your phone now has tons of incredibly personal data about your body (which is yet another reason why iPhone encryption and Apple’s stance on privacy are such critical issues). That data goes beyond daily step counts. There are devices with heart rate sensors that sync to your iPhone and can warn you when it’s beating dangerously fast. There are iOS apps for women to track their periods, sexual activity, and pregnancies. People use apps to monitor their epilepsy, Parkinson’s disease, and breast cancer treatment responses. All of that information is on your iPhone. CareKit gives you more control over what happens with that information, so you’re not just quantifying your body for the sake of it. You can do something with that data—track it, chart it, share it, or keep it completely private. CareKit has the potential to quietly up-end the entire health care system.
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