To prevent prisoners from illegally using mobile phones, the Bangalore Parapana Agrahara Central Jail installed a new signal jammer system (Tower-Harmonious Call Blocking System, T-HCBS) at the beginning of this year. cell phone jammerAlthough the system successfully blocked mobile phone signals inside the prison, it caused serious troubles to the surrounding residents and even triggered large-scale protests.signal jammer
Residents' communications were seriously affected
After the jammers were installed, residents within a kilometer of the prison said that their mobile phone signals completely disappeared and could not be used normally. GPS jammerResidents of the South Wind Layout area were the most seriously affected. Krishnamurthy, who lives near the prison, said helplessly: "Our mobile phones have no signal at all, calls cannot be made, text messages cannot be received, and even OTP (one-time password) for bank transactions cannot be received, let alone emergency calls for help."Wifi jammer
Not only ordinary residents, but also police officers at the Parapana Agrahara police station were affected by the jammers. An official from the police station complained: "Our work is inseparable from the phone and the Internet, but now we have to go outside to even send a text message."
The outbreak of protests
As the problem has not been solved for a long time, on June 10, hundreds of residents from Nanfeng Layout held a protest in front of the Central Prison, demanding that the prison authorities adjust the range of the jammer as soon as possible. The protesters believed that the newly installed jammer in the prison has too large a coverage area, causing the jammer that originally only affected a range of 100 meters to now affect an area of 1 kilometer, directly affecting the daily lives of more than 20,000 people.
