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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.)
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Hence the importance of understanding the reasons for i-mode's success, and the worrying possibility that Western excitement about wireless Internet services may be based on several i-mode myths.
Cricket Wireless Internet Service will broaden Cricket's customer appeal and continues the company's mission to meet the needs of customers who are under-served by traditional communications companies.
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TengoInternet is the oldest and largest wireless Internet service provider for the outdoor hospitality industry, enabling campground operators to keep their customers connected.
MST has recently begun deployment of its new Interactive Wi-Fi, hot-zone system that will offer wireless Internet service in large geographic areas of New York City, and is introducing the newest Powerline Carrier (PLC) technology to high-speed Internet users in apartment buildings, hotels, and business environments.
Nomadix enables wireless Internet service providers and municipalities to create networks that are optimized for data, voice and video services in high density hot zones and metro areas.
Anacapa's Chief Executive Officer, stated: "We are pleased to bring free wireless Internet service to this prestigious event.
Airimba Wireless provides WiFi high speed wireless internet service to the residents and retail businesses of multi-dwelling units (MDUs).

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