What is wifi?
Wifi, pronounced ‘why-fy’, is wireless internet that, quite literally, enables access to broadband internet without the use of wires. Instead, it uses radio waves in the same way that your mobile phone or television does. This means that you can use your laptop or other internet-enabled device anywhere in a building without having to install extra cables or phone lines, as long as the radio waves can reach the device that links the computer to the radio waves.
Wifi also allows several computers, laptops and the like to be connected to the internet at any one time, essentially creating a network between all the devices in your home or office. Wifi is also increasingly found in public places, such as libraries and cafés, making it easy to access the internet while on the move.