Wi-Fi uses multiple parts of the IEEE 802 protocol family and is designed to work seamlessly with its wired sibling, Ethernet. As of 2019, over 3.05 billion Wi-Fi-enabled devices are shipped globally each year.

As of 2017, the Wi-Fi Alliance consisted of more than 800 companies from around the world. Non-compliant hardware is simply referred to as WLAN, and it may or may not work with ' Wi-Fi Certified' devices. Wi-Fi is a trademark of the Wi-Fi Alliance, which restricts the use of the term ' Wi-Fi Certified' to products that successfully complete interoperability certification testing.

These are the most widely used computer networks, used globally in home and small office networks to link devices and to provide Internet access with wireless routers and wireless access points in public places such as coffee shops, hotels, libraries, and airports to provide visitors.

Wi-Fi ( / ˈ w aɪ f aɪ/) is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.

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