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Related to Wi-Fi: Wi-Fi hotspot, Wi-Fi finder


Computing a system of accessing the internet from remote machines such as laptop computers that have wireless connections


Either of two different incompatible radio-based LAN protocols, namely 802.11b (which speaks DSSS at 2.4GHz) and 802.11a (which speaks OFDM at 5GHz).

The term was invented by the marketing departments of wi-fi equipment manufacturers. It is, notionally, short for "wireless fidelity", on the analogy of hi-fi for "high fidelity" audio.


The standard wireless local area network (WLAN) technology for connecting computers and myriad electronic devices to each other and to the Internet. Wi-Fi is the wireless version of a wired Ethernet network, and it is commonly deployed alongside it (see Ethernet).

Every laptop, tablet and smartphone comes with Wi-Fi, as well as most security cameras and home theater devices. Printers and scanners may also support Wi-Fi, and home appliances increasingly use it for control and notifications. Although it must have been inspired by "high fidelity" (hi-fi), the name does not mean "wireless fidelity." To learn how Wi-Fi fits into the home and office, see wireless LAN, wireless router and Wi-Fi hotspot.

Wi-Fi Is Officially IEEE 802.11
Wi-Fi is the common name for the IEEE 802.11 standard. For details and history of Wi-Fi, see 802.11 and 802.11 versions. The Wi-Fi Alliance certifies that network devices comply with the IEEE 802.11 standards. See Wi-Fi hotspot, Wi-Fi Direct, Passive Wi-Fi, Muni Wi-Fi, wireless mesh network, Wi-Fi vs. Ethernet and cellular vs. Wi-Fi.

Wi-Fi-Enabled Washing Machine
This Miele washing machine sends alerts to the user and to Miele via Wi-Fi. If it reports a problem, the company may notify the dealer.

Wireless and Wired Together
With a wireless router, Wi-Fi and Ethernet co-exist in the home. See wireless router.

Ceiling-Mounted and Desktop Access Points
Access points (APs) are the Wi-Fi base stations, and the circuitry in these stand-alone units is also built into a wireless router.

Wi-Fi Adapters
The adapter (top) adds Wi-Fi to any computer via USB, while the card on the bottom plugs into a PCI slot inside a desktop computer. (Images courtesy of D-Link Corporation and TP-LINK Technologies Co., Ltd.)
References in periodicals archive ?
A panel of telecommunications experts is expected to report this spring on the feasibility of the city leading the creation of a citywide Wi-Fi community network that every citizen in the city could use for cheap or free.
Intag Communications, a Vivato value added reseller, has been testing the Vivato Wi-Fi Bridge/Router and the Wi-Fi switch at multi-dwelling units, such as apartment complexes and student housing, with Austin-based Wi-Speed Communications.
Engineers deployed a single Xirrus XS-3900 Wi-Fi Array to evaluate its advanced wireless load-balancing feature and the benefits it provides a typical corporate network.
The Wi-Fi Alliance (formerly WECA) is a nonprofit organization formed in 1999 to certify interoperability of IEEE 802.
Azimuth's AzCert[TM] Wi-Fi Certification Test Suite for Test Engine-enabled devices, which includes the ADEPT Capture Engine, is used by Wi-Fi Alliance Authorized Test Laboratories to streamline the certification process for a broad range of products.
The most critical aspect to achieving profitability with public Wi-Fi is centered on one business issue; enabling scale of economies.
The Boingo Embedded Wi-Fi Toolkit enables handsets and other mobile devices to easily and transparently authenticate to Boingo's Wi-Fi hotspots worldwide.
Adding a Symbian OS port to our portfolio opens up a tremendous new range of platforms that can leverage an embedded Boingo toolkit, which is a significant step for extending our market leadership in Wi-Fi device access.
During testing, we were impressed with the robustness of the Xirrus Wi-Fi Array," said Kevin Tolly, president, CEO and founder of The Tolly Group.
Planex was seeking an intelligent, secure and comprehensive Wi-Fi platform for our WLAN network solution.
Industry research shows that security is a top concern among Wi-Fi users, but nearly 40 percent of consumers leave their networks unsecured due to the difficulties associated with setting up security," said Chee Kwan, senior vice president and general manager of Conexant's Wireless Networking business.