I have to relate a funny story. One day I was out of town and my cell phone battery died. I don't have a car-charger because I am rarely in the car. I needed to make a call, and it was impossible to find a pay phone! There were a bunch of wi-fi hotspots around, though, so I spent 30+ minutes configuring RTCOMM, Gizmo, and GC, just to make a 2 minute call!