Cell phone jammer is new technology got the most media attention because of its amazing feature where it can disable networks and makes the space much disturbance-free. http://www.infostream.biz/3-in-1-cell-phone-jammer.html
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Cell Phone Jammer is the ultimate device which can be used by the university authorities to keep a tab on the students and their activities. It will help create a friendly atmosphere in the school rather than disturbances all around.
Jamming devices overpower the cell phone by transmitting a signal on the same frequency and at a high enough power that the two signals collide and cancel each other out.
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