I’m skeptical that you could train an DNN (or any AI) to detect cheating except maybe in browser usage patterns, but recognizing facial patterns!? What data set

I’m skeptical that you could train an DNN (or any AI) to detect cheating except maybe in browser usage patterns, but recognizing facial patterns!? What data set could they possibly have found to detect such a thing and what proof do they even have that it’s detectable?!