The WiFi Finder Plus - 802.11b/g and Bluetooth Hot Spot Detector with Filter - 33086 from Kensington is a pocket-sized device that can detect wireless computer networks. This allows you to find a hot spot without the need to boot up your laptop, saving battery life and allowing you to find an ideal place to work online.
A simple button searches for networks and LEDs indicate the strength of the signal. The WiFi Finder will detect standard 802.11b and 802.11g networks and is smart enough not to return positive results from cordless phones and microwave ovens. A separate indicator light will even let you know if there is a Bluetooth network or device nearby, and a built in flashlight is always a convenient accessory to have on hand. This is a great tool for the mobile professional who may need to get online at a moment's notice.