An experimental fingerprint detection approach can identify traces of cocaine on human skin, even after someone has washed their hands—and the test is also smart enough to tell whether an individual ...

An experimental fingerprint detection approach can identify traces of cocaine on human skin, even after someone has washed their hands - and the test is also smart enough to tell whether an individual ...

Cocaine is a powerful and addictive stimulant made from coca plant leaves, which is native to South America. In the past urine and saliva tests are used to detect cocaine use. Now, a new fingerprint ...

Thank you for signing up! Did you know with a Plus subscription to Express and Star you get full access to our award winning journalism for the news that matters to you and more. Fingerprints can ...