Make 'show image' fingerprint deleted

A new technique that allows fingerprints to be recovered on a metal surface, regardless of its form. This achievement was announced by the team at Leicester University and Northamptonshire Police Department (UK).

Applying the advances of modern science and technology, legal scientists can regain fingerprints on the metal surface even though it has been removed in any form.

The research team at the University of Leicester and the Northamptonshire Police Department (UK) have just announced a big step in fingerprinting techniques. They hope this new technology will help unlock the deadlock cases because of the lack of scientific evidence.

Experts have studied the metal corrosion of fingerprints. Thereby, they sought to reproduce the fingerprints left on metal surfaces such as guns, bullets, bullets . The key point in the technique of 'showing' fingerprints is to use the charge on the surface which was previously coated with a fine powder, similar to the photocopier used in photocopiers.

Dr. John Bond, Director of Northamptonshire Police Department's Scientific Support, explained: 'Even if the fingerprints were erased, it had left a slight corrosion on the metal surface. , and that corrosion will absorb the powder when there is an impact of the charge. As a result, fingerprints will be reproduced '.

Fingerprint recovery techniques will help to turn the case of deadlock cases due to lack of scientific evidence (Photo: NIST Tech Beat)

He said: 'Clearing or rinsing the fingerprints with hot soapy water could not remove the corrosion. Even if the heat (when firing bullets) vaporizes the traces that are often there, we can still determine who used the gun. This is the first time we can get the fingerprint of the person who came in contact with the bullet before it was shot. '

Experts believe that this new technique will help turn the record of cases that have been deadlocked decades ago, because the fingerprints of metal fingerprints will never disappear. Dr. Bond said: 'Hundreds of cases that have sunk into oblivion can be reinstated.'

Currently, Dr. Bond and chemistry professor Rob Hillman of the University of Leicester are preparing to include this research in a scholarship-based doctoral training project in the coming school year. This project will further explore the metal corrosion of substances contained in fingerprints, and the applicability of that study in detecting crime on the basis of legal science.

Research by Dr. Bond and his colleagues has been published in the American Journal of Forensic Science (American Journal of Forensic Science).