How many "forms of communication that can be enumerated" would you say there are right now?

1. It needs to not just be a helpful droid somewhat like C-3PO, but be explicitly designed to be a replica?

2. It would need to be able to interpret and produce signed languages?

@JimHays Yes and yes. And this is very possible! I could see it even happening this year.

Obviously that last part is a bit of a joke, but seriously for resolution does it need to speak independently of control (Alexa-level), or be more advanced (GPT-level), or just a speaker and a human at a microphone? And does it need to know multiple languages? 2? 10?

@TobyBusickWarner Yes, that part is a bit of a joke. What I'm getting at is whether it could more-or-less perform the basic functions of a protocol droid in the Star Wars universe as applied to our present reality. I would expect it to be independently autonomous, as in more advanced (GPT-level), assisting as an intermediary in communication, etc.

This is theoretically possible today, but I haven't seen anyone build it.

Further reading: https://starwars.fandom.com/wiki/Protocol_droid

Am I missing something here? Humanoid robots that can walk already exist, and low-data unsupervised machine translation also exists. you could make this today?

well, "you" meaning a decently sized well-resourced team, but things get easier as time passes

@jacksonpolack You could! I haven't seen a fully functional replica yet though