Widely used in forensic science for fingerprint detection, especially on porous surfaces like paper and cardboard. It reacts with amino acids present in latent fingerprint residues, producing a highly fluorescent product under UV or laser light. This fluorescence allows for clear visualization and photography of fingerprint details, even in aged or faint prints. Its high sensitivity makes it more effective than traditional methods like ninhydrin in certain conditions. Also used in some analytical chemistry applications for detecting primary amines.