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General Chat Thread, Head asked to block mobile phone signals in school... in General; ...
  1. #16

    localzuk's Avatar
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    Quote Originally Posted by X-13 View Post
    Wouldn't everything inside the cage still work?

    It just stops signals getting in and out.
    Ah, but there's the rub - I'm pretty sure the site staff would want to be able to use their own mobile phones around the site, so it would have to be just the classrooms that were sorted.

    Quote Originally Posted by dhicks View Post
    I think "magnetic" whiteboard/blackboard paint should do the trick - basically paint with iron filings in. I think places like homebase sell it for a bit less than 250, and you're bound to be able to get it in bulk somewhere. You might also be able to mix your own by simply adding some iron filings to some paint.

    You'd need to have a wireless access point in every classroom, but it would cut out any interfering signals and would probably reduce the signal strength needed on each access point (because each one now only has to transmit in one classroom). You could switch your communications to VoIP handsets.
    Not practical - we can't have network cables installed without great expense (BSF school). Not to mention we already have 80+ wireless access points and coverage is kinda spotty.

  2. #17
    CAM
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    One word to defeat the paint idea.

    Windows.

  3. #18


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    Quote Originally Posted by CAM View Post
    One word to defeat the paint idea.

    Windows.
    You could use Windows NT (No Telephones)

  4. #19
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    Seems like we have another case of a non technical issue with people looking for a technical solution (because everyone knows IT guys can do anything ).

    The issue is students are using their phones - this is a discipline issue and should be treated as such.

  5. #20


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    even blocking signals wouldnt stop kids using them as cameras which is possibly as bad if not worse anyway

  6. #21

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    Good luck with this one.

  7. #22


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    One thing to remember is the frequency bands which will be used for 4g are going up for auction soon. Will any solution you buy now be able to block them?

  8. #23


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    Quote Originally Posted by localzuk View Post
    Indeed. It is looking for a technological solution to a non-technological problem.
    You took the words right out of my mouth.
    (Meatloaf 1977)

  9. #24

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    Illegal to block, Faraday cage would work but block everything (and is impractical).

    How about a detector and a member of SMT doing spot checks in a corridor; like a speed trap? After a few weeks of crushed phones detentions/letters home etc the message would get through. Maybe you could get several schools to club together to buy the detector?

    We caught a little scrote with the mark scheme for his mock exam open on his phone just last week...

  10. Thanks to Andrew_C from:

    NDW (15th May 2012)

  11. #25

    plexer's Avatar
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    It's not worth the hassle or pursuing.

    Ofcom | Mobile phone jammers and cellular enhancers

    Ben

  12. #26
    NDW
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    I think mobile phone detectors would be the best option, at least then the students actually get caught and can be reprimanded. showing that you are looking for people with phones in school. not just for people using them in lessons

  13. #27

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    When I looked into mobile phone detectors a couple of years ago, they would only detect a phone while it was communicating with its mast, which only happens every now and again or while a call is being made.
    In addition to this they would only tell you that there was a phone switched on in range of the detector they could not tell you the location of the phone.

    anybody know if this has changed?

  14. #28


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    The thing is, parents now insist on their children having mobile phones on their person, 'in case of emergency'. Also, in today's age of smartphones, a lot of mobiles are communicating without the conscious action of their owner. Things like facebook checking for new messages/posts/tags/etc, apps checking for upgrades, heck even the operating system checking for newer versions, or Android querying any new mail in your Google inbox.

    Will you be able to differentiate between behind-the-scenes, uncontrollable activity and user-initiated activity? Or are you just going to enforce an 'All phones must be switched off at all times' rule, in which case you'll get "Well what if I need to get a hold of my son/daughter!?" (because apparently phoning the school office and asking for them just isn't good enough.)
    Last edited by Garacesh; 15th May 2012 at 02:00 PM.

  15. #29

    localzuk's Avatar
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    Quote Originally Posted by Garacesh View Post
    The thing is, parents now insist on their children having mobile phones on their person, 'in case of emergency'. Also, in today's age of smartphones, a lot of mobiles are communicating without the conscious action of their owner. Things like facebook checking for new messages/posts/tags/etc, apps checking for upgrades, heck even the operating system checking for newer versions, or Android querying any new mail in your Google inbox.

    Will you be able to differentiate between behind-the-scenes, uncontrollable activity and user-initiated activity? Or are you just going to enforce an 'All phones must be switched off at all times' rule, in which case you'll get "Well what if I need to get a hold of my son/daughter!?" (because apparently phoning the school office and asking for them just isn't good enough.)
    The argument from parents is 100% irrelevant. If a parent needs to contact their child during the day, they must use the school reception to pass a message on. It is not for them to decide to disrupt their child's day. During a school day, the child is under the care of the school, not the parent.

  16. #30

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    I really don't see this is possible and the costs to try and prevent it are going to be huge. Even then, it won't be water tight and it would create problems for staff and your WLAN.

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