[hirundo]

So an app on your phone, looking out through a camera on your glasses, could issue a security alert for very angry or scared people or animals in view. It seems a natural for Chinese style surveillance nets. Or it could be a learning tool or a prosthetic for the autistic. Real time AI assisted seduction/sales/politics/negotiation might become practical. How about an app for "reading the room".

People with the skills to read the subtleties of others' emotions have a great advantage. This tech could make some of that skill downloadable from the app store. Using it to tell if your cat is mad at you seems like the least of it.