I remember reading about this back in school in the library; I found it very sophisticated that it was specifically designed with no power source, and thus almo

I remember reading about this back in school in the library; I found it very sophisticated that it was specifically designed with no power source, and thus almost impossible to detect. A very, very clever design. And also a wonderful illustration of political machinations, in that the olive branch extended to you often has a covert team watching exactly how your fingers grasp it.