This is said to be the smallest and most handy way of carrying around a Wi-Fi signal locator with you, it comes with a key chain so the obvious thing is to use this for your keys and the Wi-Fi locator is always with you.
From the Manufacturer
The Mobile Edge Wi-Fi Signal Locator (SL) is the smallest and most convenient way to check for hot spots without going through the tedious process of having to first boot-up your notebook and then search for a signal. By attaching the Wi-Fi SL to your key chain or carrying case, you will always be immediately aware of the presence of local hot spots.
The patent-pending technology instantly detects only Wi-Fi signal presence. This technology eliminates false readings from microwave and portable phone interference. It detects 802.11B and G Networks. In addition, with four bright LED’s you can easily see your signal strength.
Priced at $25.47
Source [Amazon]
