Jamming devices to prevent crime
Use of mobile phones by inmates has been a menace that could not be controlled owing to the alleged connivance of some prison staff. Many crimes were believed to have been planned in prisons by gangsters who used mobile phones 4G jammer to communicate the plot to their henchmen outside.
In the phone scam, culprits typically guide elderly people via cell phone to send money to the fraudsters’ temporary bank accounts, pretending to be close kin or acquaintances suddenly in a financial bind.
According to dealers of cell phone signal jammer, universities have now been added to the customer list.
In a bid to block access of students to pornographic websites, the Centre told the Supreme Court on Friday that it is exploring the option of installing jammers in school premises but ruled out the possibility of putting the machines in school buses as suggested earlier.
If permitted, the school will jam cell phone frequencies during class time but not between classes or during lunch. «We believe that there are times during the school day that parents need to have access to students and students need to have access to family members, and doctors and things like that,» said Hook.
Canada had considered allowing blocking in similar situations. But Industry Canada, which regulates the country’s telecommunications, decided against it, saying the devices could infringe on personal freedom and affect public safety by crippling communication with law enforcement and security agencies.
In Mexico, the main clients have been banks looking to stop would-be robbers from communicating with their accomplices and the Mexican government, which is planning to use them at prisons, Haim said.