I would like to have your opinion about the use of a "multimodal" interface in the cockpit during flight or on the ground.
I try to make myself clear: a "multimodal" device is a system that can be activated and controlled both using traditional buttons or by the user's voice: that means that the user can give voice commands, or press buttons to interact with the system and receive spoken and/or visual/acoustic feedback.
An example (purely hypothetical) could be the belt signal: nowadays it's a button with a light to indicate if it's on or off. Its "multimodal" version could be also activated (or deactivated) giving a voice command (for example: "sit belt on"/"sit belt off"), and receive a vocal feedback by the system (along with the visual one).
My question is: in your opinion this interaction modality could be usefull in airplanes to manage secondary devices (for obvious reasons not the main controls) and which devices or controls would benefit by the combined use of the voice and traditional buttons?
Thanks a lot for your replies.
P.s.: such devices are currently been implemented in the automotive field. Few weeks ago Microsoft announced they are working with Ford to sell things like these: