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Wi-Fi
(redirected from Wifi-café)

    Also found in: Wikipedia 0.01 sec.

(WIreless-FIdelity) A logo from the Wi-Fi Alliance that certifies network devices comply with the IEEE 802.11 wireless Ethernet standards. In the early 2000s, Wi-Fi/802.11 became widely used (initially 802.11b, then 802.11g), and within a short time, all laptops and other handheld devices came with Wi-Fi built in. Earlier laptops can be Wi-Fi enabled by plugging in a Wi-Fi adapter via the USB port or PC Card. See 802.11, Wi-Fi Alliance, WiMAX, Wi-Fi Multimedia, Wi-Fi camera, Muni Wi-Fi, wireless mesh network, hotspot and cellular vs. Wi-Fi.

(networking)wi-fi - 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.
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