Spanning Tree Seams for Reducing Parameterization Distortion of Triangulated Surfaces (figures 4, 5, and 6)

A security fence system in which single-strand wires are arranged in pairs and stretched between conventional fence posts. Electrical current is passed through the pair of wires which are arranged such that upon disturbing the wires by attempting entry into the fenced area the current path will be altered, the condition sensed by a detection device, and an alarm is set off.