Although deliberately jamming radio signals is illegal in the United States, state and federal prison authorities could soon be granted an exception, allowing them to disrupt cellular signals inside correctional facilities. That is, if the Federal Communications Commission votes to approve a new set of rules later this month.

The proposed rules are aimed at curbing inmates' use of contraband mobile phones. The FCC reports that prison authorities recovered more than 25,000 cell phones from inmates across the country in 2024, with more than 6,000 devices reportedly seized at just two facilities.

Under the proposal, prisons would be required to establish and test designated areas known as jamming containment areas. These zones would be designed to prevent signal disruption from extending beyond prison grounds and interfering with surrounding communities. Mobile carriers and other relevant parties, including nearby residents, would also be notified ahead of on-site testing.

The FCC and prison authorities say blocking unauthorized cell phones could help disrupt criminal activity coordinated from behind bars, including illicit transactions and other operations carried out by inmates while incarcerated.

The commission is scheduled to consider the proposed rules at its open meeting on November 19.