Patent ID: 7405654

Claim:
A security system for inhibiting unauthorized entry by a third party, the system comprising: a defined surface area extending from a location and adapted for movement of personnel to or from the location; a first enclosure disposed in the defined surface area, the first enclosure having an open perimeter substantially parallel and proximal to the defined surface area and a majority of the first enclosure being disposed below the defined surface area; a fluid bed configuration disposed in the first enclosure, the fluid bed configuration including a gas distribution piping array and a plurality of fluidizable granular solids in a surrounding relationship to the gas distribution piping array; and a fluidizing gas means fluidly connected to the gas distribution array, said fluidizing gas means being activatable by a signal; wherein when said fluidizing gas means is activated, said fluidizable granular solids become fluidized and unauthorized entry by said third party is inhibited by causing said third party to be at least partially immersed in said granular solids.