A lot of the form factor is already mostly available in smart watches. They have to, at the bare minimum, conver the bsse functionality of those before moving onto real time ai interaction that is never real time and is hardly a proper interaction.

Progressive enhancement would be great here, smart watch in a pin form factor but with AI powered features when they make sense. Maybe some kind of super fine tuned orchestrator that know when to pass onto siri/assisstant vs. some cloud model (setting a timer requires simple parsing but a complex philosophical question can be offloaded to AI)