Mia Sato is features writer with five years of experience covering the companies that shape technology and the people who use their tools.YouTube is expanding its AI likeness detection program to all users over the age of 18 — meaning just about anyone can have the platform hunt for potential deepfakes of themselves.The likeness detection feature uses a selfie-style scan of a person’s face to monitor YouTube for lookalikes. If there is a match, YouTube alerts the user; the person then has the op...