This is not the first cellphone jammer on the market and won’t be the last, but this $166 model is small enough to discreetly carry anywhere. It’s powerful enough for personal use, slam-dunking GSM calls within about a 30-foot radius. That might be just the range of earshot in a movie theater, unless there’s yelling involved. But there usually is. Don’t get caught, this can’t be legal. [Brando]
https://gizmodo.com/cjam-1000-cellular-jammer-163223
