If you need some help getting your product from concept to tangible, today you should find a local prototype designer such as Beyond Design Inc. in Chicago or Kaleidoscope Innovation Product Design & Development in Cincinnati. Once you have a physical prototype, come back to the challenge and pick up here.
If you already have a prototype or are providing a service, set up some beta testing today. Get a few folks to try it out and give you their feedback. Start to identify your weak points and figure out possible solutions.