What is WiFi, and where is it used

The world of modern telecommunication technology is awash with acronyms, long numbers and other weird bits of code that few people understand. The term WiFi should be relatively easy because it’s a play on the words 'high-fidelity' or 'hi-fi', which means sound reproduction that is very similar to the original. But 'WiFi' doesn't really stand for wireless fidelity. It’s simply a catchy term for equipment using a particular wireless communication standard, or protocol, known as IEEE 802.11 (more about this bit of code later). Using this standard, computers and other devices can link in a wireless local area network (WLAN), which is a number of computers or computer-like devices that can talk to each other using high-frequency radio waves instead of connecting cables. The WLAN can in turn be hooked into the internet, usually with the aid of a cable.