Patent ID: 7936271

Claim:
A system for detecting intrusion of a cargo container, wherein the cargo container is an enclosed container includes walls, a roof, a floor, and a door, the cargo container sensor system comprising: a first cargo container tag that is affixed to the cargo container at a first position, the first cargo container tag comprising: a first pair of antennas a first radio subsystem block, wherein the first antenna pair of antennas and the first radio subsystem block are arranged in cooperation with one another to facilitate communications; and a first data log block that is arranged to capture data associated with the first tag; and a second cargo container tag that is affixed to the cargo container at a second position, the second cargo container tag comprising: a second pair of antennas; a second radio subsystem block, wherein the second pair of antennas and the second radio subsystem block are arranged in cooperation with one another to facilitate communications, wherein the first radio subsystem block and the second radio subsystem block are arranged to selectively communicate with one another to detect intrusion of the cargo container based on the selective communication.