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  2. Mobile phone jammer - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_jammer

    Example of a mobile phone jammer, produced by Jammerspro. A mobile phone jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting ...

  3. Mobile phones in prison - Wikipedia

    en.wikipedia.org/wiki/Mobile_phones_in_prison

    In 2017, a prison in Bristol added telephones and computers which were not connected to the internet into the prison cells in an attempt to combat illegal mobile phone usage. [24] [25] The UK Parliament passed a law which would allow mobile phone operators to jam cell phone signals in prisons later that year. The legislation also enabled prison ...

  4. Carr wants to know why FCC won't allow prison cell phone jamming

    www.aol.com/carr-wants-know-why-fcc-201600172.html

    (The Center Square) – Georgia Attorney General Chris Carr wants to know why the Federal Communications Commission will not let law enforcement jam prison and jail cell phones. Cellphones are not ...

  5. IMSI-catcher - Wikipedia

    en.wikipedia.org/wiki/IMSI-catcher

    A virtual base transceiver station (VBTS) [5] is a device for identifying the temporary mobile subscriber identity (TMSI), international mobile subscriber identity (IMSI) of a nearby GSM mobile phone and intercepting its calls, some are even advanced enough to detect the international mobile equipment identity (IMEI).

  6. Prison phone jamming demo canceled, inmates promptly order ...

    www.aol.com/news/2009-01-13-prison-phone-jamming...

    There's been a little bit of drama brewing out in DC lately, and for good reason: prisoners' ability to order pizza, drugs, and hits from the comfort of their cells is at risk. After ordering an ...

  7. Safety zealot hid a phone jammer in his SUV to stop other ...

    www.aol.com/news/2014-06-24-florida-man-hid...

    A local man, Jason Humphreys, has been given 30 days to pay a $48,000 fine after being caught radio-handed with a high-powered phone jammer hidden under his SUV's front passenger seat.

  8. Electronic monitoring in the United States - Wikipedia

    en.wikipedia.org/wiki/Electronic_monitoring_in...

    Prison overcrowding in CA led to a 2011 court order to reduce the state prison population by 30,000 inmates.. In the aftermath of decades-long tough on crime legislation that increased the US inmate population from 200,000 [6] in 1973 to over two million in 2009, [7] financially strapped states and cities turned to technology—wrist and ankle monitors—to reduce inmate populations as courts ...

  9. Cellphone surveillance - Wikipedia

    en.wikipedia.org/wiki/Cellphone_surveillance

    [13] [14] Jamming devices or a Faraday cage may also work, the latter obviating removal of the battery [49] Another solution is a cellphone with a physical (electric) switch or isolated electronic switch that disconnects the microphone and the camera without bypass, meaning the switch can be operated by the user only - no software can connect ...