The Brief Health and Human Services Secretary Robert F. Kennedy Jr. wants every American wearing a health tracker within four years. Health and Human Services Secretary Robert F. Kennedy Jr. announced earlier this summer his department is getting ready to launch one of the biggest advertising campaigns in its history to encourage Americans to use a wearable health device. He works in what's called the university's Habits Lab - where he is part of a team of researching and designing new wearable health tech devices. By the numbers:Cost is another big concern when it comes to wearable health tech. What we don't know:The U.S. Health and Human Services Department has yet to unveil its campaign to encourage Americans to wear wearable health tech.