Forensic identification

As a forensic refers to both the activity within the forensics to secure forensic relevant traces, so they be documented and, if appropriate, ensure ( Forensic Science ), as well as the recognition service given this task. It serves the tangible evidence of fact and perpetration.

Description

In this article, the security of material evidence is meant; and there are also people proofs, which are not is a technical term.

The crime scene is a part of the evaluation of attack in the context of the "First attack ". A forensics involves the search for clues, the track detection ( Ausnummerierung, production of images [eg photographically, three-dimensional ]) and the trace analysis (eg tracking, trace image, trace comparison). The crime scene begins with the so-called crime scene. She takes her course with evaluations (eg examination, comparison traces ) and ends with the merging of object and traces persons to objects at the scene or on the victims and suspects. Theoretically, based on the forensics of Locard'schen rule.

The trace evidence comes to the elementary task of securing evidence; that is, before the court are subject to relevant circumstantial evidence and strict control and must be handled expertly accordingly.

There are several techniques within the forensics, such as fingerprinting (recording and analysis of fingerprints ), the decrease of body cells ( and the subsequent " genetic fingerprint" ) and detection of blood (eg, luminol ).

Especially at the crime scene situations must be taken to ensure that no new tracks are set. Therefore forensics wear protective clothing (often Tyvek suits) and shut off the scene for other police officers, and of course curious onlookers.

Interpretation of the result

The result of a DNA test, a fingerprint or other trace alone can not decide on the guilt or innocence of a suspect. It is considered only as an indication that needs to be complemented by other. However, many suspects put a confession, when confronted with the result. This is not the case, the result must be interpreted, but also false conclusions can not be excluded.

It has to be noted that the perpetrators or participants could have a deed may be set fake tracks.

Implementation

In Germany this the " Instructions crime scene - tracks" is ( ATOS ) is decisive, which emerged from the no longer current " Guide ( LF) 385 ( crime scene investigations, tracks) ."

In the search for clues is important to note that no new tracks are set. For paths are created and the limited access numerically. In addition, the software logs entered a particular area and who made what changes. For outdoor crime scenes to Folding marquees (lane tent) have, for reasons of visibility protection ( eg press, curious ), the weather protection ( rain, wind) and for the purpose of track proven protection.

The female police officers use to purchase tracks various utensils ( cf. forensic kits ).