Remote Explosive Scent Tracing (REST) is a detection technology involving the transfer of odours to an animal detector using filters. Like Remote Scent Tracing (RST), the technology could potentially be used to detect anything that has an odour. REST technology was used originally by Mechem in Mozambique and Angola in the early 1990s. Despite the potential it demonstrated at that time, it received little attention or investment through the late 1990s until a revival of interest occurred in recent years. Currently, it is being used operationally for mine detection in Afghanistan and is likely to be implemented for road clearance in Sudan and Angola by the end of 2004. It is also used operationally for explosives detection at several airports in Europe.
McLean, Ian and Sargisson, Rebecca
"Optimising the Use of REST for Mine Detection,"
Journal of Mine Action
: Vol. 8
, Article 46.
Available at: https://commons.lib.jmu.edu/cisr-journal/vol8/iss2/46