Kensington had a gadget that was supposed to find an 802.11b source, saving you the bother of constantly starting up your notebook to check. It didn't work very well. Now, the follow up does both 802.11b and g, plus Bluetooth detection. I tried one at CompUSA and it also didn't appear to work any better than its predecessor. I could be wrong.
Also at CompUSA, I found a new one, the Mobile Edge device seems to work very well. No Bluetooth, but it does B and G wireless detection. So far, this one is the winner and I got it for $9.99 after two rebates. Hey, at that price, I felt it was worth buying. Time will tell!
Next up, it seems that HAWKING has one that appears to be even more substantial, but at a bigger size. It sort of flips open like a cell phone. I'm not sure of the price or how good/bad it is. I've always stayed clear of Hawking, because I considered it low tier hardware. However, they seem to be making a lot of neat equipment these days, at rock bottom prices.
Anyone try any of these?