Just how many geeks are driving round North Wales with that equipment hoping to find an insecure net I don't know.
2 that I know of not that long ago...
both laptops equipped to pick up any stray unprotected wi-fi signals. Proven time and time again by sitting outside different friends houses and using their connections.
This will make the whole thing much easier though...
http://www.larchcomputers.com/Kensington%20WiFi%20Detector.htm The WiFi finder from Larch Computer Services
Larch Computer Services are proud to offer Kensington's WiFi Finder at a special discounted price. This price is only available on current stock while it lasts.
The first and only WiFi detector on the market today
* Completely hassle free - no more booting up your notebook to find a WiFi signal
* Detects most 'open' WiFi networks with the press of a button
* Three clear LED lights indicate WiFi signal strength
* Compact and lightweight design - fits in your pocket
* Detects 802.11b and 802.11g signals from upto 60 meters (will not detect encrypted networks)
* Filters out other wireless signals including cordless phones, microwave ovens and Bluetooth networks
* No software or computer required
Take advantage of this great gadget offer! Kensington WiFi Finder £17.79