The escalating threat of terrorism coupled with persistent occurrence of arson, thefts or just vandalism, heightens the need to strengthen protection of key facilities and installations of organisations and governments. From oil rigs to refineries, airports to seaports, headquarters to military & homeland security bases, guarding against intrusion can no longer be reliant solely on high deterrent fences or simple CCTV surveillance. Increasing security manpower is also constrained by resource availability and costs that often still leave large intrusion gaps.