Each unit can also serve as a source of electrical power for the military, or emergency response, something always in short supply in forward operating positions.
This microscopic scale and sensitivity allows the sensor to map a high-resolution image of electrical charge that occurs over the surface of a source material (for example a human finger), when it makes contact with a thin insulating surface (ie a plastic surface).
Another is Ardunio which is open source and from the looks of it is one that I would have to leave to my electrical engineer wife to explore with the kids.