One could probably train a model with the 
Facial Action Coding System to be able to decode emotions based on facial expressions.

One could probably train a model with the 
Facial Action Coding System to be able to decode emotions based on facial expressions.


https://en.m.wikipedia.org/wiki/Facial_Action_Coding_System

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Interesting! But given that a poker face or cultural nuances exist, how reliable do you think an AI's emotion read would be across the board? 🤖🤨🤔

I would treat it like any other language.
You need a good training sample across cultures for it to work globally.
It'll also need to learn to tell when something is fake.

We're still struggling on these things for LLMs