Emotion detection is the process of identifying and analyzing human emotions through various methods, including facial expressions, voice tone, and text analysis. This technology uses algorithms and machine learning to interpret emotional cues, helping to understand how people feel in different situations. Applications of emotion detection are widespread, ranging from customer service to mental health monitoring. For instance, companies like IBM and Microsoft have developed tools that can assess customer satisfaction by analyzing feedback. In healthcare, emotion detection can assist therapists in understanding patients' emotional states, enhancing treatment effectiveness.