Wardriving
The process of locating and logging open wireless access points while driving down streets. Largely popularized by Pete Shipley after he developed a method of automating the process by using dedicated software and a GPS. Wardriving allows an individual to create a list of open networks in any area and then come back and browse those open networks.
Also see: IEEE 802.11, Security definitions, War dial, Warchalking, WEP, Wi-Fi, WLAN, WPA
