Devices that use wi-fi technology are typically mobile devices. Examples of these devices include laptops, e-readers, tablets, mobile phones and smartphones. Other devices, such as computers and televisions, may also use wi-fi technology.

802.11

WI-FI is an Internet connection used through wireless routers, the speed of WI-FI can be as close to a wired net connectivity, when other wireless technology based on invariant signal transmission, the WI-FI has a good and static speed and it's more reliable for heavy file download. The WI-FI can be secured with a password so anonymous browsing can be avoided. but on the down side WI-FI uses lot of network signal and product which receives the WI-FI gets heated soon.

Wi-Fi was first invented in 1997. Wi-Fi is the technology that allows several electronic devices to share an internet connection.

In terms of technology.. WPA is most commonly used as the acronym for Wi-Fi Protected Access