WI-FI

WI-FI
WIRELESS FIDELITY

Wi-Fi  also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards" However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" trademark.

A device that can use WI-Fi  that can connect to a network resource such as the internet using wirless network access point such an access point has range of about 20 meters indoors and greater range outdoors

Hotspots range can comprise as area as  small as a single room with wallls that block radio waves

A device that can use Wi-Fi (such as a personal computer, video-game console,smartphone, tablet, or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors. Hotspot coverage can comprise an area as small as a single room with walls that block radio waves or as large as many square miles — this is achieved by using multiple overlapping access points.

It can be less secure than wired connections because an intruder doesnot need a physical connectio ,web pages that use ssl are seure