Multiple voice commands per artboard YES. The spacebar thing doesn't bother me I kinda need that to keep the usability testing in control just in case the phone is always listening and go crazy by itself triggered by gibberish.

The voice commands you issue will match on any voice triggers added to the current artboard; they don't have to just be on the artboard. So for a work around, try adding multiple "invisible" objects to a single artboard and then wiring up different voice trigger commands to those. Using this approach you could handle multiple confirmation utterances (e.g., "Yes", "Okay", "Sure", etc.) that all go the same destination artboard. You can also prototype a multiple choice scenario by wiring those to different destinations.

Hope that helps!

Basically you should be able to have a "list" of voice commands per artboard, each with an associated "destination artboard".

As for the spacebar, I'm OK with that - I don't want me PC listening all the time anyway ;-)

Surprised more people haven't requested this

I definitely support multiple voice commands per artboard.