Your fingerprints reveal more than you think

Molecules are storytellers.
Fingerprints tell us a lot of information because they made by swat.
Scientists get molecules from fingerprints by using UV ray and measure those mass.
They can conclude what kind of molecules are if they know mass.
In short, fingerprints reveal sex of a person who left the fingerprint, whether he or she got alcohol, drug and medicines or not, and so on.
Scientists can also know where those molecules come from in the fingerprint.
This technology helps them to divide fingerprints that overlap since they can distinguish a fingerprint that has a molecule from the other fingerprint that doesn't have the molecule.
They make use of the technology to make clear fingerprint images by piling many unclear images.

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