Inverse fingerprints on paper: Visualization of latent fingermarks by nanotechnology

Paper is one of the surfaces most commonly tested for fingerprints in forensics. Unfortunately, it is particularly difficult to make fingerprints on paper visible. In the journal Angewandte Chemie, Israeli scientists have now introduced a new method developed specifically for use on paper. It produces a "negative" of the fingerprint and is, in contrast to conventional methods, independent of the composition of the sweat residue left behind.

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