In conjunction with x-ray technology, potentially coupled with intelligence information a wide range of packages need to be checked for illicit materials. These can range from simple padded bags all the way through to shipping containers. For passenger traffic individuals are chosen based on intelligence information, behavioural monitoring, and in some cases, random selection.
Preventing the importation of drugs/narcotics is an important strategy within most countries Customs facilities. In all cases the presence of drugs/narcotics can be detected quickly by a trace narcotics detector. These detectors can operate in a vapour mode sampling the vapour given off from a material of interest. Alternatively, to minimise the need to open sealed items or to damage “objets d’art”, trace detection measurements can be made on a non-scratch swab that has been rubbed on the suspect item.