Canary Wireless Digital Hotspotter. "Wi-fi finders were all the rage a year or so ago, and they continue to grow in popularity. First off, they are handy for people that travel frequently and need a handy way to find free wireless hotspots so they can get some work done. But Wi-Fi finders/detectors are also used to test the strength and reach of a home- or office-based wireless network. They are much easier to use than walking around balancing a laptop in your hand. . . "