If you haven’t read about it yet, Apple has filed for patents on technologies that can disable a phone’s camera at pre-configured locations. Most notably, this is most useful at shows and events that attempt to forbid filming and photography of any kind.
If you look more into the patent, though, you’ll notice that geo-fencing technologies is becoming a very competitive space. Google is also filing for patents with similar capabilities that will allow them to marry the physical and digital worlds in a more seamless way.
As soon as geographical locations can be defined more accurately in the digital world, I imagine we will begin to see locations using geo-fencing to promote events and provide innate rules and restrictions within an application. Snapchat actually already does a version of this with their geo-filter advertising.
Needless to say, geo-fencing has a lot of room for growth. It’s a step in the right direction, but it could also be a move toward a world of disorganized chaos.