Alright, today, I actually got time to test this. So I was at the grocery store, and I decided to play around with the networks. Opened up 5dwifi and took a look at the nearby networks. There was only one network that was WEP, so I took a crack at it. It literally took 20 seconds and the network was cracked and I was connected. So yes, this tool works. The network was at a grocery store, so although I was able to connect, the network was dead anyways
