Some believe that new science related to criminal forensics should be used to look at old cases. To what extent do you agree or disagree?
Criminal forensic is the contemporary technology to measure the criminality using DNA, fingerprints, and other medical examinations. By virtue of proximity this technology could dig out the findings of the old cases and substantiate the argument about the relevant convict; however, examining all the previous cases would impose the opportunity cost and the precious time which must be allocated with necessity of the particular crime case. Several techniques are used in criminal forensics to search, identify, and held accountable the accused based on scientific evidence. These operations are crucial for solving old criminal cases so that Justice be served as soon as possible.
For instance, DNA analysis can tackle old criminal cases more efficienctly in comparison to the use of traditional interrogation based on verbal testimonies. Genetic makeup is unique to every individual. DNA profiling is a state-of-the-art procedure that can be used to identify individuals on the basis of their unique genetic makeup. Forensic scientists compare DNA found at a crime scene to DNA samples taken from suspects. This offers an irreputable evidence to arrest to tight a noose around the real culprits and also reduces the chances of innocent to get an exemption. Advances in DNA analysis have allowed law enforcement institutions to solve decades-old cases based on samples of DNA taken from the nails or hair of the suspects.
Finger printing is yet another very convenient procedure to reach the culprit in old cases pertaining to criminal investigation. In order to collect the finger prints of suspects, forensic professionals visit the crime scene. At a crime scene, they find fingerprints by dusting surfaces with a dark powder that sticks to the prints. If they find any, they can lift the prints away using clear adhesive tape. They can collect fingerprints from doorknobs, lifts, electronic devices, and weapons used at crime scene. These fingerprints can be latent, patent or plastic prints. Impressions left on some soft and smooth surfaces like fresh paints or wax are plastic prints. A patent fingerprint is formed when you have some kind of liquid on your hands. Another form of fingerprints that are invisible in nature are latent prints. These are made visible by using some chemical or lasers.
Moreover, voice recognition can be done to identify the real culprits in solving old criminal cases. Forensic voice comparison is useful in this regard. Experts can analyze the voice recording and compare it with the voice of the suspects. Voices are tapped first and then their spectrums are drawn on spectrograph using electric impulses. A comparison of different voice graphs can help in identifying the criminal. Voices can be recorded on the sound spectrograph. This method was first utilized during second world war to assist in military intelligence system.
Similarly, digital forensics can help with criminal investigation of old cases to draw legal conclusions. For digital evidence, data is first collected from digital devices like computers, mobile phones, laptops and later on evidence analysis and assessment is done. This can help in identification of data theft, cyber security, network breaches, online fraud, and other cases pertaining to white collar crimes.
In short, the old cases can be solved with great efficacy using modern forensic procedures. A chain of scientific evidence collected through the forensic analysis can help in catching the serial killers, harassers, and those who instigate the crime by financing a bloodslot. Those who commit violent crimes can no longer Scot free with the advent of criminal forensics. Biometrics analysis, fingerprinting, DNA testing, and digital forensics have made revolutionary changes to the justice system and denies acceptance to biased testimonial evidence.
