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http://www.jammer-buy.com/drone-jammer/c-32.html
The defense and justice Botswana minister wants to buy portable jammer and find contraband phones in prison.The cellular disruper is used to prevent the cell phone from receiving signals from the base station.Minister Ramadeluka Seretse says that the device will track the mobile phones of illegal cell phones in the prison, often used by detainees for interesting criminal activity and harassment of witnesses outside of prison.Development, but against the communications administration (BOCRA) Botswana's position about using the phone jammers."We couldn't sit down and do nothing when the prisoners themselves put the phone in jail, and we were told that the mobile phone interference was illegal," said seles."This is not the first incident, the cell phone was intercepted, but the law has no way of knowing that the phone should not be intercepted," he added.Seretse has proposed a budget of 20 million euros for computerised prisons.Colonel Silas Setlalekgosi, the prisoner of Botswana, has defended the purchase of the interferer.Truly fashionable gadgets, drones pose a problem for authorities around the world. Flying over strategic locations or cities, these devices have not evolved until now without punishment. Except for some reckless assailants using a rod or a tennis ball, it's impossible to neutralize the drone in flight.