Wi-Fi is installed in devices such as a computer, game console, or smartphone. These devices, within range of a wireless network, can connect to the internet via a wireless network connection. When using Wi-Fi, a computer's wireless adapter translates data into a radio signal and transmits it using an antenna. A wireless router receives the signal and decodes it. The router sends the information to the Internet using a physical, wired Ethernet connection.
This is mostly available for home use but can be used at a wide range of local "hotspots" including restaurants, shops, hotels, and airports. Wireless networks are inexpensive and easy to setup and Wi-Fi is used by over 700 million people today. In the near future, wireless networking may become so widespread that you can access the Internet just about anywhere at any time, without using wires.
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