Wi-Fi (pronounced /ˈwaɪfaɪ/) 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 based on the IEEE 802.11 standards. 802.11 the most widely used WLAN technology. Because of the close relationship with the underlying standards, the term Wi-Fi is often used as a synonym for IEEE 802.11 technology.
Not every IEEE 802.11-compliant device is submitted for certification to the Wi-Fi Alliance. The lack of Wi-Fi certification does not necessarily imply a device is incompatible with Wi-Fi devices.
IEEE 802.11 devices are installed in many personal computers, video game consoles, MP3 players, smartphones, printers, and other peripherals, and newer laptop computers.
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