Safe And Legal Alternative To A Cell Phone Jammer

March 25, 2009 16:03 by bjones

We've all been in a movie theater, business meeting, fancy restaurant or even taking a test in school when someone's cell phone rings... and they answer it! I can't think of anything more frustrating than the ringer of a cell phone or shouting a conversation into a phone in an inopportune moment.

Restaurant owners, movie theaters and even schools are so frustrated with the problem that they buy illegal cell phone jammers for their establishments. Not only are they risking thousands of dollars in fines and a year in jail but they put every person in range of the jammer in danger of not being able to make an emergency call if necessary. The jammers also extend well past their intended area and disrupt emergency service’s communication. As a parent, I would be upset to hear that my child’s school was implementing such a dangerous device to combat the problem.

Soon there will be a safe, legal and elegant alternative: Zone of Silence. Zone of Silence is not a cell phone jammer and does not disrupt the cell phone signals in any way. Instead, it sets up a zone of a configurable size that communicates with software on the phone to limit functionality. A zone can be configured to control one or more of the following:

  • Inbound calls
  • Outbound calls
  • Inbound text
  • Outbound text
  • Ringer volume
  • Maximum screen brightness
  • Whether or not the camera can take a picture
  • And more!


911 emergency calls are always allowed.

The device can be configured to allow certain cell phone and numbers to not be restricted. Further, it can be configured to allow incoming calls from a certain number to a certain number. For example, a school can put in the student’s cell phone number and link it to their parents’ cell phone numbers so that the parents and students can still call and/or text eachother even if calls and texts are being blocked.

ZoS is safe because it allows 911 calls at any time without any intervention from the owner of the ZoS Device or the cell phone owner. It can also be turned off remotely by ZoS in the event of a natural or other disaster.

ZoS is legal because it doesn’t block or broadcast on regulated frequencies. It communicates with the phones over wi-fi and Bluetooth; both part of an unregulated spectrum.

ZoS is elegant because it allows such granular control of the phone functionalities and allows the ZoS Device owner to designate unrestricted phones. Unlike a cell phone jammer, it notifies the recipient that they have missed a call or text so that they walk outside the zone to return it.

The possible uses of Zone of Silence are endless! Schools can block inbound and outbound calls and text messages for students while allowing the teacher’s phone to be unrestricted. Theaters can block all calls, set the ringer to vibrate mode, allow text messages but set the maximum screen brightness to 50% so that the phone doesn’t annoy the other paying customers. Restaurants can block all calls and all text messages so that the patron will be notified of the missed call or text and they can walk outside the zone to return it. High security buildings can use ZoS Devices to block everything including the camera. Gyms can even install the ZoS Devices inside their locker rooms to stop the camera from taking pictures while still allowing all other features to function normally,

As Zone of Silence says: Own your zone.

Visit Zone of Silence to read more and fill out information on the Contact Us page to stay informed of progress.


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Categories: op ed | Cell Phones
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