Developing Innovation and Growing the Internet of Things Act or the DIGIT Act This bill requires the Department of Commerce to convene a working group of federal stakeholders to provide recommendations and a report to Congress regarding the growing number of connected and interconnected devices known as the Internet of Things (IoT). The bill establishes a steering committee to be composed of stakeholders outside the federal government to advise the working group. The Federal Communications Commission must: (1) seek public comment on the IoT's spectrum needs, regulatory barriers, and growth with licensed and unlicensed spectrum; and (2) submit a summary of those comments to Congress.