DNA is present in every cell of the body, it is actually the “programming code” of how the body functions correctly. DNA fingerprinting is a laboratory technique that can help to determine the identity of an individual from a small sample of their DNA. There are unique patterns in the DNA of an individual. Identification of these patterns makes it possible to see if that particular individual was present at the scene of a crime or not, because hair, skin flakes, or blood are mostly left behind in criminal scenes. DNA fingerprinting technology is now of utmost importance, helping the law and justice enforcement agencies to identify suspects. Also DNA kits are extensively being used to track ancestry of an individual and family tree forensics , this has helped to solve a number of cold cases. 99.9% of the DNA is exactly the same, it is just 0.1% which is unique to an individual.