Obtaining reliable fingerprint evidence from the kind of paper used for such purposes has always presented forensic scientists with a challenge.

However, a new solution developed by Dr Aneta Lewkowicz from Gdańsk University in northern Poland overcomes the hurdle, making it possible to provide indisputable evidence of someone’s identity, or connecting them to the scene of a crime.

“Although identification is often based on DNA analysis, fingerprints also play a key role in investigations,” the researcher told Polish state news agency PAP.

The method reveals clear and lasting prints, leading to faster and more precise analysis. It is also safer than traditional means as the solution is less toxic. Moreover, the technique can be applied at crime scenes, away from a laboratory.

“The current patent is just the start,” Dr Lewkowicz said. “It paves the way for widescale use of molecular physics in forensic science, especially in fingerprint research. It’s an exciting prospect for the development of new technologies in the discipline.”