What's a wifi finder that actually works?

Question

I need a keychain wifi finder that's cheap and actually works. I have a Kensington "WiFi Finder Plus" model 33066 and it works great if there's only one network but if there are 2 or more strong signals it says there's nothing even if there are dozens of networks in range.

Any recommendations? I'd like to keep it under $30 (preferably under $20)

Answer 1

First make sure the Wireless Network you are going to use, is not a Private Network.

Accessing anyones Wirless Network without their express permission is ILLEGAL and PUNISHABLE by law.