Principal uses jamming device to stop smartphone cheaters
Principal uses jamming device to stop smartphone cheaters Only police, military, security can legally jam signals Shy students should tweet their teachers in class, study finds Gerhard Klampfer reportedly bought and mounted a jamming device strong enough to prevent graduating classes from doing internet research on their smartphones during final exams last year.
Indian Security forces responsible for guarding Commonwealth Games venues have decided to install mobile phone jammers at Games venues to ensure high-level security.