Wi-Fi
Wi-Fi is a trademark of Wi-Fi Alliance for certified products
based on the IEEE 802.11 standards (also called Wireless LAN (WLAN)).
The term Wi-Fi is often used for describing wireless Internet (WLAN);
but not every wireless Internet product has a Wi-Fi certification,
which may be because of certification costs.
Wi-Fi is supported by most personal computer operating systems,
many game consoles, laptops, smartphones, printers etc.