Images that show how fingerprints can be used to reveal whether you are a smoker, an avid coffee drinker or even a drug addict have been revealed by UK scientists.They were produced using a novel forensic technique that could in future be used on fingerprints collected at a crime scene. If the prints in question are not on file, this would still give police a powerful way to shrink their pool of suspects, by identifying their lifestyle habits.
It exploits the fact that the breakdown products - metabolites - of substances people consume are deposited in sweat found in pores in their fingerprint ridges.
New Scientist
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