The invention provides a system, device and method designed to detect, alert and identify unwanted entry into areas by intruders. The invention is also designed to prevent escape from secured facilities. If escape from such a secured facility is realized, the system will identify and mark the intruder or escapee for immediate or later capture by local and or federal law enforcement authorities. The system will accomplish this by mechanical, electronic and chemical means. The system is also designed to be a territory denial system. Although the system will accomplish its means by clandestine deployment, the unseen but known presence of the device will cause a profound psychological block to any would be intruder to a given area that it is deployed in. The devices are deployed below ground just below the surface as a non-lethal landmine and subterranean several feet below ground as an anti-tunneling device.

The invention provides a system, device and method designed to detect, alert and identify unwanted entry into areas by intruders. The invention is also designed to prevent escape from secured facilities. If escape from such a secured facility is realized, the system will identify and mark the intruder or escapee for immediate or later capture by local and or federal law enforcement authorities. The system will accomplish this by mechanical, electronic and chemical means. The system is also designed to be a territory denial system. Although the system will accomplish its means by clandestine deployment, the unseen but known presence of the device will cause a profound psychological block to any would be intruder to a given area that it is deployed in. The devices are deployed below ground just below the surface as a non-lethal landmine and subterranean several feet below ground as an anti-tunneling device.

A method and apparatus are disclosed for preventing excavation damage to buried infrastructure. A plurality of excavation-sensing modules is buried near the buried infrastructure. The buried infrastructure excavation-sensing modules protect and detect buried infrastructure by emitting dense clouds of visible gas when the excavation-sensing modules are activated by impact with excavation equipment. In most instances, the visible gas will be brightly colored and it may also have a strong odor. In addition to the gas released by the modules, a loud sound may also be produced by the activated excavation-sensing module. This alerts construction crews or other workers that their excavation is nearing a protected underground structure. Once installed, no maintenance or active monitoring is required.

A method and apparatus are disclosed for preventing excavation damage to buried infrastructure. A plurality of excavation-sensing modules is buried near the buried infrastructure. The buried infrastructure excavation-sensing modules protect and detect buried infrastructure by emitting dense clouds of visible gas when the excavation-sensing modules are activated by impact with excavation equipment. In most instances, the visible gas will be brightly colored and it may also have a strong odor. In addition to the gas released by the modules, a loud sound may also be produced by the activated excavation-sensing module. This alerts construction crews or other workers that their excavation is nearing a protected underground structure. Once installed, no maintenance or active monitoring is required.