I can definitely find you autistic people who would hate having such a device pointed at them, because they don't mask the ""correct"" emotional state well enough.
Was on about Autistic people being able to use it to understand the other person, not the other way around, which would be a nightmare for them, which sadly is what they get in real life anyhow already. Though might be useful to warn them that they are sending the wrong signals, so a mixed bag on that way around.
