Wi-Fi is a wireless technology that allows digital devices such as computers, tablets, and smartphones to communicate with each other and access the Internet without having to use cables. Wi-Fi networks use radio waves to provide users with high-speed access to the Internet and other networks. Wi-Fi networks can range from local networks that are limited to a single building, to larger networks that span an entire city, or even an entire country. Wi-Fi networks are typically secured with a password to keep unauthorized users from accessing the network. Wi-Fi has become an essential part of our everyday lives, allowing us to access the Internet quickly and easily from nearly any location.