Wireless Fidelity is an acronym for Wi-Fi , a wireless system of LAN (Local Area Network) . This allows portable or portable devices (laptop computers , mobile phones) to be easily connected to the Internet. The standard for Wi-Fi is IEEE 802.11 which is a wireless LAN standard. It is also used for networking between different portable devices and fixed devices. Its coverage area can extend up to a few meters. Area known as Wi-Fi Network or All Wi-Fi Hotspot.