Wi-Fi

Wi-Fi is based on IEEE 802.11 standard and is a trademark of the Wi-Fi Alliance that manufacturers may use to brand certified products that belong to a class of wireless local area network (WLAN) devices. The term Wi-Fi is often used as a synonym for standard IEEE 802.11 technology.The Wi-Fi Alliance is a global association of companies that promotes WLAN technology and certifies products if they conform to certain interoperability standards. As of 2010, IEEE 802.11 devices are installed in many PC (personal computers), video game consoles, printers, smartphones, and all laptop or palm-sized computers.Wi-Fi allows the deployment of local area networks (LANs) without wires for client devices (wireless networks) to reduce the costs of network deployment and expansion, especially for spaces where cables cannot be run, such as outdoor areas.As of 2010 manufacturers are building wireless network adapters into most laptops due to which the price of chipsets for Wi-Fi continues to drop, making it an economical networking option included in even more devices. Wi-Fi networks have limited range, a typical wireless router using 802.11b or 802.11g with a stock antenna might have a range of 120 ft (32 m) indoors and 300 ft (95 m) outdoors. Wi-Fi operates in more than 220,000 public hotspots and in tens of millions of homes and corporate and university campuses worldwide and its use (whether home or business oriented) is increasing day by day