Article describes the most common methods for evaluation of physical protection systems. It analyzes various software simulations and describes how mathematical model can be used for evaluation and designing of physical protection systems and how it can provide a basis for software simulation that could upgrade possibilities and extend the scope of previous software. Author is focusing on the selection of the best approaches from the evaluation of physical protection systems designed for

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... facilities and how these approaches can be used in evaluation of physical protection systems designed for the protection of property, persons and tangible assets. Keywords: Effi ciency of protection system, physical protection system, index of security measures, probability of interruption, protection system design.