Even if you don't do drugs, there's a surprisingly decent chance your fingerprints have traces of cocaine and even heroin. The study was fairly small, involving 50 drug-free people and another 15 who had used cocaine or heroin in the previous 24 hours. They also had the various subjects shake hands, and the clean users showed traces of the drugs after a handshake with drug users. The researchers were able to set a threshold and pick out the prints of the actual drug users from the innocents. This article originally appeared on Newser: Your Fingerprint Might Have Cocaine in It

Source: Fox News March 22, 2018 17:11 UTC