Patent ID: 8395480

Claim:
A system comprising: a plurality of routers communicatively coupled with each other; each router in turn communicatively coupled via RF communication below 1 megahertz to a plurality of tags, each tag having a battery and a static RAM powered by the battery; each tag having a radio transceiver and controller, the controller of the tag controlling the transceiver and disposed to read and write information to and from the static RAM of the tag and to communicate said information via the transceiver to and from the router; each tag having a unique hardware address independent of the static RAM and independent of the battery, said unique hardware address communicable by the controller and the transceiver to and from a router; a portion of said information defining for at least one tag an address independent of the hardware address of the tag, said address stored within the static RAM; each router characterized in having routing means for routing data packets among the routers to the at least one tag with reference to the address independent of the hardware address of the tag.