Fingerprints have been used for over 2000 years. They have been extensively studied by anthropologists and biologists. A person's fingerprints begin to form around the 13th week of pregnancy and are completed around the 19th to 24th week. Fingerprints are unique, difficult to change, and remain relatively stable throughout a person's life. They represent a person's basic characteristics.

DNA fingerprints can be used to determine blood relationships, track down criminals through biological traces containing DNA left at the scene, or track down victims through living bodies, even if they are just bone fragments or teeth. This is a great advancement in forensic science.