>because it detects only contraband. Well, that's what SCOTUS seems to believe. It is readily apparent though that dogs also detect handler cues, and may well

>because it detects only contraband. Well, that's what SCOTUS seems to believe. It is readily apparent though that dogs also detect handler cues, and may well also just alert erroneously, or detect such trace amounts that could be imparted to a car by incidental contact.