So? For any data charges the person silly enough to do that would pay for it? I set up a free wifi connection to my cell account. If my cell charges anything for it I get to pay not the person using it for free? Plus if I owned a femtocell or wifi company I ain't war driving anything. I would set up my test lab. Make sure it is secure before shipment or install. If I hear or read something may do some more testing. But random war driving? My equipment will be secure and charge the user. If my user sets up stuff after my product that is not secure and runs up a bill not my problem. It is theirs. May put it in TOS as a warning not to. Now for a laptop dual homed. Say I have given an employee a company laptop for VPN into my business. Will inform them business use only no changes to software etc. Want your own laptop buy it. They set up something insecure fired. That could be caught by a proper security setup and random or every so often laptop checks if questionable things seem to be going on. Now yes maybe for a secure building walk thru checks for unauthorized access points. But netstumbler or kizmet? There is cheap hardware for that to locate such access points.
