Systems and methods are disclosed to track first and second nodes equipped with radio frequency identification (RFID) tag readers by registering a first node and a second node with a registration server; assigning the first and second nodes to first and second home servers respectively, wherein the first node is authorized to communicate with the first home server and the second node is authorized to communicate with the second home server; and for each query requested by each node, sending the query to the registration server to be broadcasted to the home servers.