Forensic science has to be conducted in a systematic way, each step needs to be completed in a certain period of time. Once the steps are completed, the process is complete and it is suitable for use on all forensic processes such as chemical analysis, crime scene reconstruction and others.
Forensic methods are used to investigate the evidence of crime. Forensic science is a subset of criminal science that applies mathematical, statistical and experimental methodologies in the investigation of forensic evidence.
The gold standard is DNA analysis:
Since his "eureka moment," the scientific technique has been successfully utilised to identify criminals, establish paternity, and exonerate persons who have been wrongfully condemned. DNA testing and analysis is now widely regarded as the most reliable of all forensic tools.
Although there are several sources of digital evidence, for the purposes of this publication, the topic is separated into three key forensic types of devices where evidence can be found: Internet-based, stand-alone PCs or devices, and mobile devices.
Sir Alec Jeffreys, a professor and geneticist at the University of Leicester in the United Kingdom (UK), did not pioneer DNA-based identity testing until 20 years ago.