joining us on "the communicators" at the site of the fcc's's mhealth innovation expo is matt quinn, director of health care initiatives for the fcc. welcome. >> guest: thank you. >> host: why is the fcc involved in these matters? >> guest: we're involved in lots of ways in health care and in mobile health. one of the ways that we're involved is that we had an mhealth task force last year say here are some ways that fcc can provide leadership in this area. we have a equipment certification program. so, basically, any piece of equipment that uses spectrum as a transmitter we approve as an agency. the other side is that we allocate spectrum. so spectrum is the oxygen on which mobile devices run, whether they be mobile devices for health or other areas. but in a more important sense, we have to collaborate and coordinate with both other federal agencies, but also with the private sector in helping entrepreneurs and innovators get to market. >> host: so let's take those three points that you made. spectrum, we think about it on the cell phone and other technologies. how do these devices depend on