ResearchKit, presented by Apple's Jeff Williams in March, enables app creation to aid medical research. Eric Risberg/AP hide caption

itoggle caption Eric Risberg/AP

Lively is a sensor that can be attached to a pill box, keys or doors. It lets people know whether aging parents are taking their medicines or sticking to their routines. Courtesy of Lively hide caption

itoggle caption Courtesy of Lively

Manic, sad, up, down. Your voice may reveal mood shifts. iStockphoto hide caption

itoggle caption iStockphoto