Map of Wi-Fi nodes in the world collected by the WiGLE project
Map of Wi-Fi nodes in the world collected by the WiGLE project
Credit: WiGLE.net

Wardriving is the act of searching for Wi-Fi wireless networks by a person in a moving vehicle using a Wi-Fi-equipped computer, such as a laptop or a PDA. It is similar to using a radio scanner, or to the amateur radio practice of DXing.