In addition to the increasing interest - now - in the human and material capabilities, and the scientific methods that are used in preventing crime, sometimes and in arresting the criminal in most cases; Where the research is interested in presenting the methods of criminal technical investigation to control the incident, and how to extract clues and evidence, and collect them in the preliminary stage (the stage of collecting inferences) to obtain physical evidence with the least time, effort and cost. Moving away from traditional means during the stages of criminal investigation, and relying on modern technical alternatives, as is the case in some advanced systems in criminal investigation, would strengthen the guarantees of the accused and ensure that the investigation proceeds in the right direction. This enables us to reach the truth, through tangible evidence, which speaks the truth alone, without coercion, forgetfulness, lies or slander, as it limits the crime to its narrowest corners.
