Handwriting provides a window into a person's deepest self and subconscious mind. It can be used for understanding personality, character analysis, child development, and recruitment. When a person writes, nearly 85-90% of their brain cells are activated, making handwriting a more effective way to understand someone than speaking. Handwriting analysis can help individuals gain self-awareness, aid child development by understanding strengths and weaknesses, and help companies recruit the right candidates by revealing traits like trustworthiness, leadership abilities, and work style.