American prisons are experimenting with cell-phone jamming devices

They claim jamming signals could disrupt service in areas surrounding prisons, but corrections officials tell us that’s a bogus argument. According to them, the real reason the federal government won’t approve jamming is quite simple: Cell phone companies don’t want to part with a significant stream of revenue.

Prison cell phone jammer have become a necessary addition to the arsenal of tools1 required for the safekeeping of inmates. Cell phones are becoming smaller every day, making them easier for inmates smuggle into facilities. This creates an even more difficult job for the already burdened correctional worker, however a cell phone jammer is the answer to restricting the inmates from using the cell phones for potentially dangerous activities. Cell phone jammer use can also force inmates to use prison approved / monitored phone lines.

Such tests could lead to the broader use of technologies like GPS jammer inside prisons to immobilize inmate phones, which officials across the country have described as their No. 1 security threat.

In some scenarios, the signal is likely to cause unfair events occur, so most of people prefer to directly use test special blockers, this is because in the examination room, some students want to do everything you can to cell phone use is inevitable, and take photos to convey information, under such circumstance, if we really can use blockers, then you will find each other finally results are the same, so that can ensure the test process more complete.

It is reported that the interference shielding device will scan to the low frequency and high frequency of the channel at a certain speed during the working process. The scanning speed can cause chaotic interference in the signal received by the mobile phone. The mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station.

Jack, a high school student, said his cell phone was off during school and was used when he came home from school to contact his parents. “There is nothing wrong with installing a signal shield in the classroom, which ensures the normal teaching order.” Jack agreed with the school.

Playing mobile phones and games in class will seriously damage education targets. Installing mobile signal shielding devices in the classroom can prevent such behaviors and put education back on track