WiFi is an field standard technology that helps the enabled electronic device to exchange data wirelessly.

This is by using radio waves from a linkage over a computer network and then can spread connections to high-speed Internet connections. The WiFi Alliance identifies WiFi as any wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards". In spite of this, as almost 100% of modern WLAN s are using these standards. Hence the term Wi-Fi is used in general terminology as a term for WLAN.
A device that can use Wi-Fi such as a personal computer, videogame console, mobile phone ,android tablet, digital audio player, smart tv ,games console, I-phone,I-pad, separate screen and many many more products can link to a network resource such as the Internet via a wireless network access point.
Such an access point can have a range of about 20 meters indoors and a large range outdoors. There are different methods and hardware to greatly enhance and spread the signals and that configuration is becoming an industry in itself.
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 can be achieved by using multiple related access points and now usage of the cloud internet can be used to coordinate these points.
WiFi has been trademarked by the WiFi Alliance and the brand name for product lines using the IEEE 802.11 group of standards. Only WiFi products that complete Wi-Fi Alliance interoperability certification testing correctly may use the WiFi CERTIFIED name and trademark.
Wi-Fi has had a checkered security history. The encoding system of signals is recurrently evolving with usage, Wired Equivalent Privacy WEP has proved easy to break.
So much higher security protocols, WPA and WPA2, have been went ahead and added . The WiFi Alliance has since updated its test plan and certification program to ensure all newly certified devices resist certain security breaches this again due to usage is a critical element for some surfers of WiFi
On the internet access With WiFi
A WiFi facilitated device can connect to the Internet when within range of a wireless network. The coverage of one or more access points called Wifi hotspots can stretch out from an area as small as a few rooms to as large as many square miles.
Coverage in the more sizable area may require a group of access points with overlapping coverage. Outdoor public Wi-Fi technology has been used effectively in wireless mesh networks in a numbers of cities around the world with great effectiveness
Wi-Fi provides service in private homes, high street chains cafes,bars,hotels,fast food outlets (McDonalds,Burger King Starbucks )independent businesses, as well as municipal buildings rail networks service station networks. Also in many public spaces at Wi-Fi hotspots that are set up either free of charge or commercially.
Companies and small-businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free Wi-Fi access.
Access Points with various routers that comprise of a digital subscriber line modem or a cable modem and a Wi-Fi access point, often set up in homes and other residences, provide Internet access and internet working to all devices accessing them, wirelessly or via cable.
Also there are cell powered mobile routers that includes a cellular mobile Internet radio modem and WiFi access point. When subscribed to a cellular phone carrier, they allow nearby WiFi stations and devices to connect and then to log on to the Internet over 2G, 3G, or 4G networks. So WiFi multiplies the devices able to hook up to an access point however that access point will be on the internet.

Wifi Promotion