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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 ?
It's already happening in Philadelphia, which is launching the largest municipal hot spot in a few weeks, and Chicago is toying with the Wi-Fi network idea as well.
The coverage provided by the Vivato Wi-Fi Bridge/Router is incredible.
Supports up to 1,024 simultaneous wireless users with a single XS-3900 Wi-Fi Array
The Wi-Fi Alliance has instituted a test suite that defines how member products are tested to certify that they are interoperable with other Wi-Fi CERTIFIED products.
Service providers are demanding 'carrier-grade' Wi-Fi solutions and TapRoot's integration capabilities enable the required handset performance and interoperability testing.
Using Tatara's carrier-class platform, retail service providers can work with an evolving landscape of partners to quickly secure cost-effective and broad Wi-Fi coverage while maintaining ownership of the end customer relationship.
ASTRI is a world-class research company with cutting-edge technologies, and its selection of the Boingo Embedded Wi-Fi toolkit is a visionary statement that roaming will be an essential part of the next-generation of Wi-Fi phone designs.
Symbian is delighted to partner with Boingo Wireless, leading Wi-Fi hotspot aggregator - now with over 60,000 hot spots located around the globe," said Jerry Panagrossi, vice president, US Operations, Symbian.
Xirrus commissioned The Tolly Group to evaluate the resiliency and failover features of its XS-3x00 family of Wi-Fi Arrays.
4 and 5 GHz band Wi-Fi access with integrated continuous, non-disruptive security sensors
Conexant is to be congratulated for achieving Wi-Fi Protected Setup certification for their integrated Wi-Fi/DSL gateway platform," said Wi-Fi Alliance Managing Director Frank Hanzlik.