1 Eric Hekler is with the Herbert Wertheim School of Public Health and Human Longevity Science (HWPSH), Design Lab, and Center for Wireless and Population Health Systems, Qualcomm Institute and HWSPH, University of California, San Diego. Cheryl A. M. Anderson is with the Herbert Wertheim School of Public Health and Human Longevity Science and the Department of Medicine, Division of Nephrology and Hypertension, University of California, San Diego. Lisa A. Cooper is with the Department of Medicine, Johns Hopkins University School of Medicine and the Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD.