Facial coding / decoding is the process of interpreting and understanding the emotions and intentions expressed through facial expressions. It involves analyzing the subtle movements and changes in the face, such as the positioning of the eyebrows, the tightening of the lips, and the widening of the eyes, to decipher the underlying emotions and thoughts of an individual. This technique is often used in psychology, marketing, and communication to gain insight into a person’s true feelings and to better understand their nonverbal communication. By decoding facial expressions, we can uncover hidden emotions, detect deception, and improve our overall understanding of human behavior.