War Chalking is the practice of walking through an area with a laptop that is equipped with a WiFi NIC and marking on the ground where WiFi access is available. There is an established set of symbols to use that let one know what kind of access is available, how fast it is, and whether or not it is secured.

The practice of indicating the presence of both secured and unsecured wireless networks by using chalk to mark nearby buildings or sidewalks. close

Whitelist Wireless network