On Strengthening Science And Technology In Criminal Investigation In The Field Of Criminal Evidence

Science and technology, especially of criminal science andtechnology in this thesis, is considered as a body of specificinvestigational expertise. In the process of criminal investigation, staffs ofcriminal technology department in public security organs make use oftheories and methods of modern science and technology, in accordancewith criminal procedure laws, for finding out, recording, abstracting andappraising of all kinds of material evidence and documentary evidence,which all together pave ways to provide materials and clues forinvestigating, suing and prosecuting. Criminal science and technology, asan important means in solving criminal cases, plays a significant role inthe work of public security systems.Strengthening science and technology in criminal investigation is tohold the belief criminal science and technology should be put on the firstposition, and to firmly implant the idea that criminal science andtechnology is effectiveness in mind, thus putting criminal science and technology on the important position in solving criminal cases. Throughextensive use of criminal science and technology in the work of criminalinvestigation, the effectiveness and fighting capacity of department ofCriminal Investigations can be thus improved.With the development of information technology, the rapid progressof science and technology, and the increasing perfectness of security oflaw systems, our society is faced with increasingly tough public securitysituations and high-tech of crimes. Therefore, public security organs cannot depend on traditional detecting ways such as: huge-crowd strategy,manual operation and experience-depended operation, which obviouslycan not meet the needs of new situation. The only way out is to face thenew situation, root in existing achievements, improve overall quality, tapexisting potentials, exert great efforts in developing criminal science andtechnology, and exercise advanced technology to improve the overallcombat effectiveness of the department of Criminal Investigations andcombat crime effectively, maintaining the stability and development of thesociety. Criminal science and technology mainly consists of mark inspection,photography and videotape on crime, documentary examination,physics-chemistry method inspection, forensic medical examination ofmaterial evidence, DNA technology and lie testing technology, etc.At present, there are some problems in DNA technology:disqualification of police who are in charge of abstracting biologicalevidence, easily contaminated biological evidence and illegal operation insampling procedure. Problems also exist in Lie Testing technology: lack ofrelated laws and regulations, the suspect of infringing upon human rightswhen testing are not permitted by criminal suspects, disputations uponadmissibility of Lie Detector evidence in the academe, irregular levels ofpolice who are responsible for testing, restriction by requirements of liedetector of promoting Lie Testing technology in Public security organs atthe grass-roots level.The problems of documentary inspection technology mainly include:lack of national unified testing procedure rules and technological standard;needing improvement of verification of documents; unrealized automatic inspection of verification of handwriting; shortage of national unifiedmaterial base of documents.This thesis thoroughly analyze problems existing in the work of DNAtechnology, Lie Testing technology and documentary inspection, findinganswers to these problems, which can undoubtedly be drawn lessons andinstructions for the development of criminal science and technology.