In place of a cell phone jammer, is there anything else I'm able to do?

So i play trivia each week and the number of people who use their phones to look up answers is ridiculous. I looked into getting a cell phone jammer, but its illegal in the US, i think. Anyone have any suggestions?

One response on “In place of a cell phone jammer, is there anything else I'm able to do?

  1. DON

    If you control the space where your group meets, you could shield the entire area from RF reception.

    The procedure isn’t trivial.

    Don

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