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A new technique to help catch sex offenders:

Scientists Spot first condom lubricant fingerprints.

sex offenders try to outsmart the police and try to escape justice by using condoms, but thanks to a technique developed at Sheffield Hallam University , researchers can prove that the offender have had sexual contact with a condom and place it in the scene.

Perhaps because of the risk of sexual transmission and to prevent the transfer of DNA testing , there has been an increase in condom use by sex offenders. The method developed by researchers at the Biomedical Research Centre Sheffield Hallam University, we would detect condom lubricant fingerprints left by a suspect in the crime scene.

With an analysis can be linked to a suspect who has been identified by their fingerprint, thus helping the police to show that the crime has taken place. also expected that this technique could be used to check the oil obtained in the fingerprint, to coincide with residues vaginal samples collected from the victim.

Researchers first detected successfully lubricant two brands of condoms on fingerprints, the technique has proved successful even in traces left several weeks before analysis.

Scientists hope that eventually the technique could be used to determine the different lubricants and so we can identify a specific condom manufacturer and possibly even a particular brand. This would allow the forensic case could be pointed in a more accurate.

To the study, researchers used MALDI-MSI ((matrix-assisted laser desorption / ionization mass spectrometry imaging)), a powerful technology that can be used to meet the peak patterns in the model.

The Dr. Simon Francese of BMRC, said: "Criminals are becoming more aware of the common forensic issues and the condoms now removed from the scene of a sexual assault. But the offender is less likely to consider the possibility that the lubricant is transferred to the tips of his fingers and then to the marks left at the scene.

"If Condom lubricant can be detected in fingerprints, could improve the prosecution evidence by establishing the presence of the attacker at the scene, especially after having contact with a condom. This would allow forensic scientists to provide greater support to the evidence of alleged sexual assault cases. "

Sheffield Hallam University." New technique to help catch Sexual Offenders: Scientists detect fingermarks on condom lubricant for the first time. " ScienceDaily 19 January 2011. 23 February 2011 / releases/2011/01 / 110119132517.htm>.