Agape Blog

Scientists have come up with a new method that uses X-rays to detect microscopic corrosion caused by the chemicals in fingerprint residue. It works on bullet casings and machine guns. Generally the heat evolved while firing vapourises normal clues. But now the detectives will be able to prove who handled and loaded a gun, even after cleaning.

Dr. John Bond developed this technique along with some forensic researchers at the Leicester University. He said “For the first time we can get prints from people who handled a cartridge before it was fired. Wiping it down, washing it in hot soapy water makes no difference - and the heat of the shot helps the process we use.”

Cases dating back decades could be reopened because the underlying print never disappears. Hundreds of gun crime files could now be re-examined. This process can be used for other cases where prints are on metal.