Wi-fi proof paint

If they put it in an aerosol can, i'll take it. Imagine the possibilities >:)

Spray someones phone, spray someones tv...
 
Is it too soon to be asking what they put into this RF-resistant paint? - hopefully not something harmful like Pb.
 
ic said:
Is it too soon to be asking what they put into this RF-resistant paint? - hopefully not something harmful like Pb.
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Would be rather a big step backwards. 'Honey, our banking details and home LAN are safe, but I had to sacrifice the baby's health..."
 
halicon said:
awesome and simple idea to protecting wi fi networks... but what of the office has windows...

ahh wi-fi tinting...
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Except that it seems to block using cellphones as well - maybe best not to paint|tint windows just yet :D.
 
ic said:
Except that it seems to block using cellphones as well - maybe best not to paint|tint windows just yet :D.
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then they much use the stuff in movie houses and other places were people are completely selfish and have no etiquette what so ever.
 
skydog said:
then they much use the stuff in movie houses and other places were people are completely selfish and have no etiquette what so ever.
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Good idea in theory, but there are people out there who are contractually obligated to be available at all times. Where will they watch movies then? :P

The subject of using this type of paint in movie houses has been discussed, I read about it months, if not a year ago.
 
@skydog: What irritates you so much about people having their phones on in the theatre? I think people can just put their phones on silent and if they get a call they can go take it outside. So imo it's just a matter of people not giving a sh#t. I personally always put my phone on silent when i see the switch your phones off adverts and if I get a call no one will know if I'm leaving for a bathroom break or to answer my phone.
 
bullfrog said:
@skydog: What irritates you so much about people having their phones on in the theatre? I think people can just put their phones on silent and if they get a call they can go take it outside. So imo it's just a matter of people not giving a sh#t. I personally always put my phone on silent when i see the switch your phones off adverts and if I get a call no one will know if I'm leaving for a bathroom break or to answer my phone.
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Unfortunately many people dont switch to silent and even worse some people will actually have a conversation either while sitting down or while walking out of the theatre.

People survived before the advent of the cellphone - they can probably survive for 120 minutes during a movie.
eremos said:
Good idea in theory, but there are people out there who are contractually obligated to be available at all times. Where will they watch movies then? :P
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Does that mean they cant fly? Or go into a hospital that prohibits cellphones in certain areas? Or go to court?
 
-toady- said:
>And, if EM-SEC could develop a body-paint version of the technology, they would no doubt have the tinfoil-hat tendency queuing round the block.<

Laughing here... you are brilliant Syndyre... keep going.....

toady:D
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In theory I suppose you could go even include the technology in clothes, easier than lining your jeans with tinfoil. :D You placed your order yet toady? :p
 
bullfrog said:
@skydog: What irritates you so much about people having their phones on in the theatre? I think people can just put their phones on silent and if they get a call they can go take it outside. So imo it's just a matter of people not giving a sh#t. I personally always put my phone on silent when i see the switch your phones off adverts and if I get a call no one will know if I'm leaving for a bathroom break or to answer my phone.
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Thats what I do too, I also usually make sure there's nobody between me and the aisle so I don't have to bother anybody if I leave. Don't see how that can disturb people, had a major argument once with some idiotic Nu Metro employee once who threatened to throw me out because I'd walked out of the theatre to answer my phone and was standing outside the bathroom talking, there's no way I could possibly be disturbing anyone there. Phoned the manager afterwards to complain and it turned out he was the manager, some ppl... :sick:
 
I'm a bit skeptical about this. To shield a RF signal, the perfect system would be a Faraday cage around the transmitter or receiver, i.e. a perfect metal box that is grounded.

Painting a room with something that can absorb some RF will have little effect. The layer will be very thin, won't be earthed and what about all the holes in the structure, commonly known as ceilings, doors and windows?

I see they don't give any performance measurements, for example what the signal attenuation is. Could be that an already weak signal is attenuated by another dB or two, just enough to make it drop, but if you have a WiFi AP in a room at 50 or 100mW, you're going to pick up the signal on the outside, let alone a mobile phone at 2 watts.

/edit - replaced walls with windows, typo... and don't forget the floors...
 
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vodacom3g said:
I'm a bit skeptical about this. To shield a RF signal, the perfect system would be a Faraday cage around the transmitter or receiver, i.e. a perfect metal box that is grounded.

Painting a room with something that can absorb some RF will have little effect. The layer will be very thin, won't be earthed and what about all the holes in the structure, commonly known as ceilings, doors and walls?

I see they don't give any performance measurements, for example what the signal attenuation is. Could be that an already weak signal is attenuated by another dB or two, just enough to make it drop, but if you have a WiFi AP in a room at 50 or 100mW, you're going to pick up the signal on the outside, let alone a mobile phone at 2 watts.
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My assumption was that the paint would reflect RF signals rather than absorb or allow the signals to pass through...

If it is a case of reflecting an RF signal off the paint, then it's likely that a wifi AP could transmit at a lower power level considering that the signal should be more concentrated inside a fully painted structure.

How would the typical cellery phone deal with a lack of signal from a base-station? - would it wait for an incoming signal or continually try to switch between roaming networks [if set to automatic - not manual network selection], i.e. would its battery run flat quicker in such a painted structure or not...?
 
vodacom3g said:
I'm a bit skeptical about this. To shield a RF signal, the perfect system would be a Faraday cage around the transmitter or receiver, i.e. a perfect metal box that is grounded.

Painting a room with something that can absorb some RF will have little effect. The layer will be very thin, won't be earthed and what about all the holes in the structure, commonly known as ceilings, doors and walls?

I see they don't give any performance measurements, for example what the signal attenuation is. Could be that an already weak signal is attenuated by another dB or two, just enough to make it drop, but if you have a WiFi AP in a room at 50 or 100mW, you're going to pick up the signal on the outside, let alone a mobile phone at 2 watts.
Click to expand...

Note to all service providers in SA: THIS is the level of "cluefulness" your support people should have! :P
 
ic said:
My assumption was that the paint would reflect RF signals rather than absorb or allow the signals to pass through...

If it is a case of reflecting an RF signal off the paint, then it's likely that a wifi AP could transmit at a lower power level considering that the signal should be more concentrated inside a fully painted structure.

How would the typical cellery phone deal with a lack of signal from a base-station? - would it wait for an incoming signal or continually try to switch between roaming networks [if set to automatic - not manual network selection], i.e. would its battery run flat quicker in such a painted structure or not...?
Click to expand...

Probably better to let one of the RF guys comment. I would expect a painted layer to be too thin to reflect 100%, suspect most would go straight through if not earthed.
 
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