[USA] System may help correction officials detect drug use / Idaho Statesman, 25 November 2007
http://www.idahostatesman.com/387/story/220196.html
"With a quick scan of the eyes, Idaho Department of Correction officials may soon be able to tell whether a probationer or parolee has used drugs or alcohol. Idaho Department of Correction officials are testing the new system - called Passpoint - that can detect whether a person has used substances in the past couple of days."