The FCC has made it illegal to jam wireless phone service, which has led to a black market of jammers as well as development of passive wireless blocking materials, so that churches, theaters, restaurants, and schools can suppress phone signals in their vicinity. I think the case for jamming and blocking is particularly strong for schools, as shown by this case of cheating in the chess world:
An Indian chess player has been banned for 10 years for cheating after he was caught using his mobile phone’s wireless device to win games, chess officials said on Wednesday.
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Sharma was finally caught at a recent tournament when officials discovered that he had stitched a Bluetooth device in a cloth cap which he always pulled over his ears.
He communicated to his accomplices outside the hall, who then used a computer to relay moves to him, Indian chess federation secretary D.V. Sundar said on Wednesday.
Kids are routinely texting their friends during class, degrading an already feeble learning experience. Now new tools for cheating are difficult to detect and in a couple of years will be impossible to detect. It is time to take back local control of the electromagnetic spectrum, and prevent undesired EM frequencies from disturbing our peace and undermining our teachers.