Wi-Fi finders aren’t the most exciting devices around, but they come in handy if you want to check for wireless connectivity without firing up your notebook. Kensington’s WiFi Finder Plus has a column of LEDs that indicate signal strength for any 802.11b/g networks in range. Of course, a positive test doesn’t mean that the network is accessible, but you can rest assured that you’re looking at a true network, as the Finder filters out irrelevant 2.4GHz signals (such as microwave ovens and cordless phones). The keychain device also has a moderately bright flashlight and an LED that denotes active Bluetooth networks.