Fingerprint identification is based on the uniqueness of ridge patterns found on human fingers. These patterns—loops, whorls, and arches—are formed during fetal development and remain unchanged throughout life. The kit demonstrates how forensic scientists use powders and brushes to reveal latent prints, then analyze them using magnification and comparison techniques. This hands-on activity teaches kids the principles of individuality and classification in forensic science, showing how fingerprints help solve real-world mysteries.