If someone is wardriving, he/she will be driving around in a vehicle, using a wireless device like a portable computer or smartphone to find Wi-Fi networks. This can be done using free software for detecting these networks.

you can use a laser pointer in the special ops mission: Wardriving

War Chalking goes hand in hand with another questionable activity called "Wardriving". Wardriving involves driving around (or walking on foot) to find WiFi hotspots around your neighbourhood or city, and connecting to them to see what's on the network. Some people drive around to find home wireless networks that haven't been password protected to use the internet for free. War Chalking refers to when one of these individuals marks a symbol on the pavement or a wall to tell other "wardrivers" that there is an open signal there to be used. It evolved from another well known system called "Hobo Code", where homeless individuals would mark with chalk when a property is friendly, or has a vicious guard dog, or might call the police, etc.

Wi-fi hotpots seem to be omnipresent these days. You can find them in every commercial fast-food joint, starbucks®, library, hotels, and even in your neighbor's houses.

The public ones are free, and many people take on the activity known as "wardriving" to map out all these hotspots throughout an area.

You can even tether a device to your phone and use it as a router. Usually costs money for this piggyback service.