The following short article focuses to enlighten the reader about the crucial principle in the field of forensic science which is known as law of individuality. The law primarily focuses on the individual character of any object or substance. Everything has an individual character. The traces and samples collected from the crime scene owes to the law of individuality for the discoveries made throughout the investigation. The article further describes the areas that are affected and which are living proves that substantiate this principle. These are trace evidences, finger prints, hair samples, forensic toxicology, administration of medicines, ballistics etc. Various sources such as the National Crime Records Bureau Report 2020, Bureau of Police Research and Development Report 2020 have been employed for research purpose of this article.

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