Perimeter security is the first measure of a comprehensive property protection strategy. It establishes the initial barrier to prevent unauthorized individuals and potential perpetrators from advancing further or at least to delay their actions sufficiently to give response teams the opportunity to intervene. This book provides the fundamentals of perimeter security, which should always begin with a mechanical barrier (wall, fence, etc.) that is then supplemented with electronic systems and installations. This includes various detection systems at the perimeter and underground, as well as outdoor security measures between the outer boundary and the property, typically consisting of light barriers, motion detectors, video technology, and similar devices. The systems can appear individually or consist of several interconnected installations. Planners and installers must...