How to prevent cell phone signals from entering certain places

A prominent concern is the ability of an inmate to contact witnesses before an impending hearing, trial or appeal. By matching alibis or correcting conflicts in testimony, a defendant can win a reduction in or a complete dismissal of charges. The most frightening concern that correctional institutes contend are undetected cell phones used by inmates to warn other inmates in advance of surprise searches that could confiscate cell phones, knives, drugs, syringes and other contraband items. This smuggled merchandise can pose life-threatening situations to correction officers and medical personnel working in one of the most hostile and treacherous work environment that exists.

Wardens have tried and failed to stop cell phones signal jammer from making their way into prisons. Rather than fight that losing battle, they might be able to prevent cell phones from being used once they make their way inside.

Schools do everything possible to prevent students from using mobile phones

The reporter came to the west to the great suzhou to visit the site. School students xiao zhao said that they recently in the school’s official website to see the purchasing signal blockers notice, “since entering high school, every test, the teacher will take it into the classroom, a power supply plug can use, very convenient.” Mr. Zhao said he didn’t know whether the shield would be open at ordinary times because he didn’t have a cell phone.

The high school student xiaoqian said that during the school period is the state of shutdown, the mobile phone is used when returning home to contact parents. “There is nothing wrong with installing a signal shield in the class, which will ensure normal teaching order.” Xiao qian agreed with the school’s practice.

According to this, the larger the headmaster of the affiliated high school of suzhou office anyone miss li reply, school at the weekend for classroom installed cell phone jammer, including up to three, “blockers only open during the test, in order to prevent the phenomenon of individual students unconsciously, the organization of test specification, guarantee the objective and fair.” She said the school does not encourage students to carry mobile phones in principle, and it also stipulates that mobile phones cannot be used in teaching areas and teaching hours.