angrymnk wrote:
TirithRR wrote:
angrymnk wrote:
Jophiel wrote:
I never said that it had to be the size of the house, but you haven't explained how a room sized cage will help you either. I assume you don't really know either since you've twice avoided actually giving a plausible scenario.
Huh? Three times is the charm? I am not sure hoe how can anyone not ser the benefit of cells not workin in one specific room..
So you don't want your cell phone to work in a specific room in your house... don't bring it in?
And if you are worried about someone else bringing their phone into your "secret room"... well, that special cage didn't solve anything, because what ever device they just brought into the room without your knowledge still works, and is recording or what ever. The cage didn't stop anything. And since they still have it, they leave with that information...
Depends; the idea is to prevent electronic surveillance ( from afar ), but your point is taken.
Electronic surveillance (from afar) doesn't work that way though. The only thing a Faraday cage does is block RF transmissions across the cage wall itself. So an electronic device inside the cage can't communicate with one outside (assuming it's properly constructed and sealed). So yes, it would prevent someone who's hacked your phone from using it as a remote microphone and listening to you in real time. Of course, you could also just turn the phone off and get the same effect for far less expense. Also, the same person could hack your phone and use it as a recording device, only uploading the recording later once it reestablishes cell contact with a server. This completely bypasses the false security of your Faraday cage (which ironically, just turning the phone off, or not bringing it into the room does protect against perfectly).
This again assumes someone just connecting to your phone and using it as a tap. Other forms of surveillance (like someone planting a recording device and removing it later) aren't prevented. Additionally, sound isn't blocked by Faraday cages. So directional mics aimed at your secret room, or laser mics aimed at nearby windows or the walls of your cage will work just fine. I suppose it really depends on how paranoid you are about people spying on you.
Honestly, the only type of surveillance that I can think of that a Faraday Cage would actually protect you against that couldn't be more easily prevented by just turning off a phone (or not taking it into the room) would be a planted actively transmitting bug. Of course, if anyone is going through the trouble of physically planting a bug in your home, they'll surely notice the cage and simply run a transmitter wire to the outside. How do you think computer equipment inside a cage communicates with stuff outside? It's trivially easy. Again, if you assume someone is really trying to spy on you, the whole Faraday cage idea isn't going to be anything more than a tiny speed bump. You're just creating a false sense of security for yourself IMO (and wasting a ton of money).