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Urgent gelatin onto fingerprints then exposing it to a particular vapour can decide when the prints had been made
Chemistry
30 July 2022
Which got here first, the fingerprint or the textual content within the doc it was lifted from? Cultura Artistic RF/Alamy
A way for figuring out whether or not a fingerprint appeared on a chunk of paper earlier than or after textual content was printed on it might assist resolve fraud circumstances. The method makes use of commonplace forensic instruments and so can be easy to place to make use of.
In forensics, the “when” is commonly as vital because the “who”. In a case, for instance, there may very well be a scenario the place somebody is suspected of tampering with a will or contract by printing …
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