Patent ID: 8228189

Claim:
A method of tracking a position of at least one entity within an entity area, the method comprising: providing at least one deployable RFID device, the at least one deployable RFID device comprising: a battery; an RFID reader connected to the battery configured to receive a locating signal; and at least one modem connected to the RFID reader; providing at least one active RFID tag; connecting the at least one active RFID tag to the at least one entity; deploying the at least one deployable RFID device as a first deployable RFID device and a second deployable RFID device within the entity area; transmitting a tag locating signal from the at least one active RFID tag; receiving the tag locating signal from the at least one active RFID tag with the RFID reader of the at least one RFID device; based on the tag locating signal determining a position of the RFID tag relative to the at least one RFID device to generate tag position data; transmitting a RFID device locating signal from the first deployable RFID device; receiving the RFID device locating signal from the first deployable RFID device with the second deployable RFID device; and determining a position of the first deployable RFID device relative to the second RFID device based on the RFID device locating signal received from the first deployable RFID device with the second deployable RFID device.