After watching hours of video footage of former President Barack Obama delivering his weekly address, Shruti Agarwal began to notice a few quirks about the way Obama speaks. “Every time he says ‘Hi, everybody,’ he moves his head up to the left or the right, and then he purses his lips,” said Agarwal, a computer … Leggi tutto Facial tics might be the key to distinguishing real videos of people from deepfakes