FCC Fines Smart City $750K for Blocking Wi-Fi
Here is Smart City's response.http://apps.fcc.gov/ecfs/document/view?id=60001011936Among other interesting points is that they seem to have been using the same "de-authentication" trick that Marriott had used in a similar case a while ago.  Also, they make an argument about density and interference that IMO shouldn't be dismissed out of hand.  I still think they were wrong and deserved the fine, but it's worth keeping in mind that mobile hotspots can fall afoul of the very same principle and law behind that fine.