we all have unique prints,
none are ever the same,
not even twins.
there are different types of prints like:
Loop
whorl
ark
CSI usually use a powder substance to trace fingerprints at a crime scene
or
they may use a laser scanner like this picture at the top
or
they may use a spray which reveals fingerprints on difficult surfaces(paper etc.)
But sometimes,
when they match fingerprints to a suspect,
they get it wrong like they did with Shirley mckie
here is what happened:
Shirley McKie
Error in identification. Shirley McKie was a police detective in 1997 when she was accused of leaving her thumb print inside a house in Kilmarnock, Scotland where Marion Ross had been murdered. Although detective constable McKie denied having been inside the house, she was arrested in a dawn raid the following year and charged with perjury. The only evidence was the thumb print allegedly found at the murder scene. Two American experts testified on her behalf at her trial in May 1999 and she was found not guilty. The Scottish Criminal Record Office (SCRO) would not admit any error, but Scottish first minister Jack McConnell later said there had been an "honest mistake".
On February 7, 2006, McKie was awarded £750,000 in compensation from the Scottish Executive and the SCRO.[ Controversy continues to surround the McKie case with calls for the resignations of Scottish ministers and for either a public or a judicial inquiry into the matter.]
Error in identification. Shirley McKie was a police detective in 1997 when she was accused of leaving her thumb print inside a house in Kilmarnock, Scotland where Marion Ross had been murdered. Although detective constable McKie denied having been inside the house, she was arrested in a dawn raid the following year and charged with perjury. The only evidence was the thumb print allegedly found at the murder scene. Two American experts testified on her behalf at her trial in May 1999 and she was found not guilty. The Scottish Criminal Record Office (SCRO) would not admit any error, but Scottish first minister Jack McConnell later said there had been an "honest mistake".
On February 7, 2006, McKie was awarded £750,000 in compensation from the Scottish Executive and the SCRO.[ Controversy continues to surround the McKie case with calls for the resignations of Scottish ministers and for either a public or a judicial inquiry into the matter.]
this is my study on fingerprints
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