@Xepol You can design a system that would almost only jam the prison area, but a simple "low coverage" would be easy to circumvent and it would be even more annoying for the neighboring area.
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Would it not just be simpler AND cheaper to not have any cell phone towers in range of the prison?
About the same effect as a blanket jamming signal, but LOTS cheaper.
@Xepol You can design a system that would almost only jam the prison area, but a simple "low coverage" would be easy to circumvent and it would be even more annoying for the neighboring area.