This calls into question the viability of using cell phone jammers in prisons to disable smuggled cell phones. At least for those jammers that aren’t salt proof! Jamming is one of the myriad ways being tested to address the supply of contraband cell phones in prisons around the world. A strategic focus on the demand side of this problem – prisoners’ desire for more communications options while incarcerated – is what is missing from these […]
salt trick
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