http://www.ncjrs.org/pdffiles1/nij/205685.pdf
Prison administrators must be on guard for attempts to smuggle illegal drugs into correctional facilities, and the prison mailroom is the third most common point of entry, after visitors and prison staff. NIJ funded a study to determine if commercially available drug detection systems could be effective in prison mailrooms. This report presents the findings from this study, which was conducted in a mock prison mailroom setting. Results show that a number of technologies might help intercept drugs in prison settings, but that they vary in cost and effectiveness with certain drugs.
