The modem provides access to the Internet, and the router broadcasts a WiFi signal, allowing your devices to connect to each other and the Internet. A WiFi-capable device can then use this signal to connect to the Internet. Routers are available from many different manufacturers.

To establish WiFi in your home, all you need is either a modem connected to a wireless router, or a wireless gateway, which is a modem and wireless router in one unit (see What is a Wireless Gateway? for more information). A WiFi-capable device can then use this signal to connect to the Internet.

A router does two special things by leeching on to your modem. (Well, three.) A wireless router allows you to connect your Internet connection at home with any wireless device, such as a laptop, Smartphone or iPad. (Make a note: you just need to make sure your wireless network is secure.