#ai, there's plenty of #university/#research with faces graded for "mood" or "trustworthyness" or "intimidation". You could make a really helpful interactive #app that will help you master very subtle emotional cues. Spaced repetition or maybe Face Invaders, whatever helps you learn.
Or if you're just gonna catch up with my client on facechat. Smile slider... Disapproval slider...
In any case you're covered if you just want to manipulate #naive people.