What is the function of criminal science and technology?

Criminal science and technology is a subject that uses the theories, methods and achievements of modern science and technology to test criminal material evidence. Because it has the nature of natural science, and it applies social sciences such as law and criminal law to carry out its work according to law, it has distinct class nature and militancy. It is an important part of forensic science in China, and its branches include: trace inspection, document inspection, forensic examination, criminal photography inspection, object odor identification and so on. They mainly use the principle of material transfer and exchange, species identification and the same identification principle to complete the identification, inspection and identification of material evidence. In practice, criminal science and technology play an irreplaceable role in determining the nature of the case, identifying the case, describing the personal situation of the offender and providing case evidence.