A new method of recovering fingerprints shows great potential in capturing criminals. Felons often wipe bullet casing to remove their sweaty prints, and until now it was a fairly successful way of not getting caught.
The new technique makes use of the salt left behind even after the sweat was removed. As a corrosive substance, salt microscopically etches the fingerprint into the metal shells. A fine powder is then dusted on the casing and the metal is charged electrically causing the dust to adhere to the corroded areas, exposing the hidden loops and whorls. This process only works if the perpetrator has enough salt in their system, not everyone does.
Using Salt to Catch Crooks
More Stats +/-
Pay By Finger
3 Year Old School Children Fingerprinted
Collaborative Property-Hunting Apps
Free 2018 Report & eBook
Get the top 100 trends happening right NOW -- plus a FREE copy of our award-winning book.
Our Research Methodology
This article is one of 350,000 experiments. We use crowd filtering, big data and AI to identify insights.
The Latest Forensic Science Breakthrough
- By: Elsa BlaineSep 8, 2008