[fucking_tragedy]

The article itself mentions the drug tests used in the field coming up as positive for cocaine through just air exposure.

Here is another that confirms the same thing happens upon air exposure to certain methamphetamine and marijuana field tests[0].

Point is that this abysmal false positive rate is that it's too convenient and the incentives are too high when it comes to maintaining an inexpensive shield for officer error / instant probable cause compared to court costs.

[0] https://www.themarshallproject.org/2015/04/02/jolly-ranchers...