They've deployed 200 antennas in one UW building and a dozen researchers are carrying RFID tags on them. According to the Seattle Times, all their moves are tracked every second in the building.

Radio frequency identification readers are likely to soon be commonly outfitted with TCP/IP stacks, as well as Ethernet, Power-over-Ethernet and 802.11 wireless LAN connections.

UC/Berkeley scientists are perfecting a cloud of motes—tiny network sensors—to create reader-free RFID networks that can still find items.