Explaining The Universe on Instagram: "Face ID scanning works by using advanced 3D facial recognition technology to identify a person based on the unique features of their face. When you look at your phone, an infrared camera and a dot projector work together to create a detailed depth map of your face. The dot projector shines over 30,000 tiny infrared dots onto your skin, while the infrared camera captures an image of how those dots form your facial shape. This 3D map, along with a regular inf