Wi-Fi is a family of wireless networking technologies based on the IEEE 802.11 standards that allow devices to connect to a local area network and the internet without physical cabling. It is governed and certified by the Wi-Fi Alliance and operates primarily in the 2.4 GHz, 5 GHz, and 6 GHz radio bands.
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- Wi-Fi uses radio frequencies to connect devices to a wireless access point, which in turn links them to a wired network. The IEEE 802.11 standards define the physical and data-link behaviour, and successive versions have increased speed and capacity.
- Wi-Fi is used in homes, offices, and public spaces to provide network access without cabling. Security protocols protect traffic over the air, and the Wi-Fi Alliance certifies devices for interoperability.