Fingerprints: Impression of the friction ridges of all or any part of the finger that can be used for identification. flexibility of friction ridge skin means that no two finger or palm prints are ever exactly alike. Fingerprints collected at a crime scene, or on items of evidence from a crime, can be used in forensic science to identify suspects, victims and other persons who touched a surface.
DNA profiling: If the DNA profile for a crime suspect matches the profile from a sample found at the crime scene, there is a very high probability that they come from the same person. DNA is being used increasingly as evidence in court, but it is considered ‘circumstantial’ evidence and can only be used as proof with other supporting evidence.FACTS AND FIGURES
In cases when DNA was recovered, the crime detection rate rose from 26% to 40% in 2004/05
In a typical month suspects are linked to 26 murders, 57 rapes and sexual offences and 3,000 motor vehicle, property and drug crimes. An average of 40,000 Criminal Justice samples and 4,000 crime stain samples are loaded to the database each month
The annual number of crimes detected where DNA scene-to-suspect links were made quadrupled from 8,612 in 1999/2000 to 35,605 in 2004/05
The number of DNA suspect-to-scene matches increased by 75% from 23,021 to 40,169 between 1999/2000 and 2004/05
The government and the police have invested over £300 million in the database
There are an average of 3,000 database matches each month
There were over 40,000 database matches in 2004/05
"Source: Police Information Technology Organisation (PITO)"
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