Some people say they never forget a face.
It took me a long time to realize faces were special to most people. One time he walked right past his mother on the sidewalk and didn't recognize her. She was not amused. Bizarrely, some face-blind people, adds Carter, do well at recognizing faces that are turned upside down. Sure, it's been done, back in the old Cold War days before nukes in space were banned by international treaty.