One approach to finding Wi-Fi hotspots is to use a Wi-Fi Finder, a small, inexpensive device that has appeared on the market recently.
The most commonly used Wi-Fi Finder is the one from Kensington Technology Group, model number 33063. This tiny unit measures 2.7 by 3 inches, and is about a 1/2-inch thick.
It's simple to use the Wi-Fi Finder. When you're out wandering, press the unit's button. If it detects an 802.11b or 802.11g Wi-Fi network, the green lights light up. The more green lights, the stronger the signal. If only the red light appears, there's no Wi-Fi network in the neighborhood.
The Wi-Fi Finder blocks out competing 2.4GHz signals from devices such as cordless phones and microwaves, so that when it shows ...