A walk-through portal or other enclosure is provided for at least one of detection of a predetermined substance on a subject and decontamination of a subject from a predetermined substance, the subject being either a person or, for other type of enclosure, an object, such as a suitcase. The walk-through...http://www.google.co.uk/patents/US6375697?utm_source=gb-gplus-sharePatent US6375697 - Apparatus and method for screening people and articles to detect and/or to decontaminate with respect to certain substances
