So this open source software we're trying to build would allow you to essentially flash SIM cards and distribute them to people.

CNN: The cell phone revolutionary

Switching cards is particularly popular in Europe, where people "walk in, buy a SIM, and keep on adding minutes to it, " notes Current Analysis analyst Bill Ho.

FORBES: Magazine Article

Those towers and the altered SIM cards could make it possible for small groups of people to communicate over a network, Gosier said.

CNN: The cell phone revolutionary