As you probably know the human body language is involuntarily linked to the human mind. So for example if we access our memory we tend to look to the left. If we feel uncomfortable we tighten our shoulders etc.
I wonder if those involuntary movements are / will be implemented in Sophia / other humanoids. I think this subtle way of communicaton will help us to better connect with humanoids.
Also humanoids could use kind of a simple sign language for communicating system information without talking.
So for example a finger to the temple of the head could indicate that a lot of computing power is used, One eye closed could indicate that there’s no wifi connection, etc.