Dana Lewis is a thinker, doer, and teacher of health & digital things - and *the developer of an open source, closed loop artificial pancreas.* Dana is the creator of #DIYPS, the Do-It-Yourself Pancreas System, and a founder of the #OpenAPS movement to make safe and effective basic Artificial Pancreas System (APS) technology more widely available. She also created and moderates #hcsm, the global health care social media community that meets weekly on Twitter, and works at the intersection of all things health and digital. Professionally, Dana serves as Director, MDigitalLife for W2O Group, helping organizations understand, engage, and activate the online health ecosystem. She can be found at @DanaMLewis, #DIYPS, and #OpenAPS on Twitter.