Fingerprint test can distinguish between those who have taken or handled heroin

ScienceDaily
Nov 11, 2019, 8:47 pm154 pts
A state-of-the-art fingerprint detection technology can identify traces of heroin on human skin, even after someone has washed their hands -- and it is also smart enough to tell whether an individual has used the drug or shaken hands with someone who has handled it.

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Fingerprint test can distinguish between those who have taken or handled heroin

ScienceDaily

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