But imagine your cell phone has a wi-fi chip, and most of them have it anyway, it creates a local network. Imagine that network is an ad hoc network and can imm

But imagine your cell phone has a wi-fi chip, and most of them have it anyway, it creates a local network. Imagine that network is an ad hoc network and can immediately connect with other networks. So all the cell phones we have create their own small networks and become interconnected with each other. Ta-da -- http://penumbra.warmcat.com http://penumbra.warmcat.com