This process is used as one means of identification when an attacker or assailant has left some kind of bodily fluid or blood at the scene of a crime and when no visual identification is possible.

DNA – or genetic – fingerprinting relies heavily on the principle that no two individuals share the same genetic code – except for identical twins and statistically those elements of DNA that are examined and used to obtain a match will be unique.

The process of DdnaNA fingerprinting was first used during the 1980’s and its application was quickly to become that of identification of suspects involved in serious crimes including murder. The premise that most attackers or killers will leave some measure of bodily fluid at a crime scene – be it saliva, blood, semen or other such fluid – was quickly accepted as common place and it became a staple of many criminal investigations.