A regular fingerprint (left) and one containing condom lubricant (right)
Sexual offenders are increasingly using condoms when committing their assaults, both to reduce the risk of sexually-transmitted diseases, and to avoid leaving their DNA at the crime scene. While an offender might still leave their fingerprints behind, that often only proves that they were at a given location, and not that they were involved in any wrongdoing. Researchers from the Biomedical Research Centre at Sheffield Hallam University, however, have recently developed technology that detects condom lubricant in fingerprints. If a suspect could be tied to a crime scene by their fingerprints, and be shown to have handled a condom at that location – well, they’d have a lot more explaining to do.