Wi-Fi Logo — Wi-Fi is a mechanism for connecting electronic devices on a LAN . Devices enabled with Wi-Fi, such as a PC, game console, a smartphone or a digital audio player can connect to the Internet through an access point wireless network . This access point (or hotspot ) has a range of about 20 meters (65 feet) indoors and outdoors a greater distance. They can cover large areas of multiple overlapping access points. Wi-Fi is a trademark of the Wi-Fi Alliance (formerly WECA : Wireless Ethernet Compatibility Alliance ), the trade organization that adopts tests and certifies that it meets the standard 802.11 wireless networks related to local area.

This new technology arose from the need to establish a wireless connection mechanism was consistent between different aparatos.Buscando that compatibility was that in 1999, companies 3Com, Aironet , Intersil , Lucent Technologies , Nokia and Symbol Technologies met to create the Wireless Ethernet Compatibility Alliance WECA , now called Wi-Fi Alliance. The purpose of it was to appoint a brand that would allow more easily promote wireless technology and ensure compatibility of equipment. Thus, in April 2000 WECA certifies the interoperability of equipment according to standard IEEE 802.11b , under the brand Wi-Fi. This means that the user is assured that all computers that have Wi-Fi seal can work together seamlessly, regardless of manufacturer of each of them. You can get a complete list of equipment that are certified Wi-Fi Alliance — Certified Products .

In 2002 the association WECA was formed and by almost 150 members as a whole. The family of 802.11 standards has naturally been evolving since its creation, improving the range and speed of information transfer, among other things. The standard IEEE 802.11 was designed to replace the equivalent of the physical layer and MAC of Standard 802.3 ( Ethernet ). This means that the only thing that differentiates a Wi-Fi network Ethernet is how to transmit frames or data packets, the rest is identical. Therefore, a local network wireless 802.11 is fully compatible with all the amenities of local networks ( LAN ) cable 802.3 ( Ethernet ).

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