Perceptual Computing refers to technology that enables computers to interpret and respond to human emotions, gestures, and speech. This field combines elements of artificial intelligence, computer vision, and natural language processing to create more intuitive user interfaces. Devices equipped with perceptual computing capabilities can recognize facial expressions, track eye movements, and understand voice commands, enhancing user interaction. Applications of perceptual computing are found in various areas, including virtual reality, augmented reality, and human-computer interaction. For instance, gaming systems can use these technologies to create immersive experiences, while smart assistants can improve their responsiveness by understanding user emotions and context better.