According to the United States Federal Communications Commission, "the use of 'Cell Phone Jammers' or similar devices designed to intentionally block, jam or allow radio communications (GSM jammer, GPS jammers or text jacks, etc.) ) violates federal laws. Interference. Hell, even selling jammers in the US is illegal, but it's pretty easy to buy jammers overseas (as long as they're not caught by retailers). The only legitimate buyers of this equipment are government officials.
Of course, the Driver, Priest, and Teacher may have used suspicious judgments, as the Disruptor not only blocked their limited locations, but also blocked them. But they all have the best of intentions, and perhaps Liptak has the best reason: To gain some notoriety, we call our future a concern.