Voice commands and input

We have started looking into providing an option for voice input and commands in Storyline (initially). We have completed a 'proof-of-concept' demonstration allowing voice or typed input to a text entry field that, although it needs some refinement before being ready for deployment, works pretty well.

We now have our sights on a voice-driven drag-and-drop exercise and a voice-driven downloadable survey form. Has anyone made progress in this area?