Global Positioning System (GPS) is a satellite network that allows for precise and reliable determination of location and time anywhere on or near the Earth.
Radio-frequency Identification (RFID) is a technology that uses radio waves to exchange data between a reader and an electronic tag attached to an object.
ZigBee comprises a set of high-level communication protocols tha tuse small, low-power digital radios for low rate wireless personal area networks (LR-WPANs).
Wireless IP covers many different types of wireless or RF communications IP components, including 802.11/WLAN, Bluetooth, and RFID