The iPhone's TrueDepth camera system utilizes an infrared dot projector and flood illuminator to create a 3D structural map and 2D infrared image of a user's face, enabling secure authentication in all lighting conditions. By analyzing the deformation of over 30,000 projected infrared dots and generating a mathematical representation of facial geometry, Face ID prevents spoofing and adapts to changes in appearance. For a detailed technical overview, visit Apple Support . About Face ID advanced technology - Apple Support
The iPhone's TrueDepth camera system utilizes an infrared dot projector and flood illuminator to create a 3D structural map and 2D infrared image of a user's face, enabling secure authentication in all lighting conditions. By analyzing the deformation of over 30,000 projected infrared dots and generating a mathematical representation of facial geometry, Face ID prevents spoofing and adapts to changes in appearance. For a detailed technical overview, visit Apple Support . About Face ID advanced technology - Apple Support