What is Landmine Detection

Metal detectors and dogs can both detect mines, but both methods have their disadvantages: false positives and physical limitations, respectively.
The solution is a system that detects a very specific component of a landmine its chemical signature.
One prototype of such a system employs a chemically treated film that's applied to the ground and then viewed through ultraviolet light.
If the chemical signature is not present, the film remains fluorescent.
If an explosive is present, however, a dark circle forms around the area on the film. Another exploratory method uses microwaves and remote- vibration sensing.