Blocking transponder signals?
Stan
transponders for your car to open the gate. Since some local highways and
bridges use transponders to collect tolls, I'm assuming their scanners can
also detect my security-gate transponder, or maybe the gated community has
installed hidden scanners around the development to track my movements
within.
So how do I block the signal? I would like to make a small box to keep the
transponder in that is shielded and remove it only to activate the gate.
And this could also be used to shield things like identity cards, security
badges, etc. that have RFID chips embedded in them. I'm not looking to
jam the signal with an electronic RF circuit but to block it with physical
shielding.
What might I do? Magnets, layers of steel wool and aluminum foil, or what?
Onideus Mad Hatter
Shove it up yer ass, that should block any unwanted signals.
--
Onideus Mad Hatter
mhm น x น
http://www.backwater-productions.net
GeekBoy
"Onideus Mad Hatter" <use...@backwater-productions.net> wrote in message
news:tg6te15v2qjjq1ruh...@4ax.com...
GeekBoy
"Stan" <st...@sp.org> wrote in message
news:yxwHe.1483$ns....@newsread1.news.atl.earthlink.net...
You would have to know what frequency they operate on.
Maybe you can get that from the manufacturer or get a frequency counter.
You would then have to generate white noise on that same frequency and with
more power than the unit generates to jam the signal.
>
Perfect Reign
someone gave a rat's ass and spewed out:
> I'm forced to live in a gated community for the next 2 years and they issue
> transponders for your car to open the gate.
There's not one around your ankle, is there? :)
> Since some local highways and
> bridges use transponders to collect tolls, I'm assuming their scanners can
> also detect my security-gate transponder, or maybe the gated community has
> installed hidden scanners around the development to track my movements
> within.
So, when you're wardriving around the place you don't want them to know you
sit outside people's houses for hours using their internet? :)
--
kai - www.perfectreign.com
linux - official windows replacement part
Colonel Flagg
lead.
/CF
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ThePsyko
<colone...@NOSOUPFORJ00-internetwarzone.org> made their contribution
to mankind by stating in
news:1jcte19sv5rd2mjnu...@4ax.com:
> On Mon, 01 Aug 2005 21:32:14 GMT, "Stan" <st...@sp.org> wrote:
>
>>I'm forced to live in a gated community for the next 2 years and they
>>issue transponders for your car to open the gate. Since some local
>>highways and bridges use transponders to collect tolls, I'm assuming
>>their scanners can also detect my security-gate transponder, or maybe
>>the gated community has installed hidden scanners around the
>>development to track my movements within.
>>
>>So how do I block the signal? I would like to make a small box to
>>keep the transponder in that is shielded and remove it only to
>>activate the gate. And this could also be used to shield things like
>>identity cards, security badges, etc. that have RFID chips embedded in
>>them. I'm not looking to jam the signal with an electronic RF circuit
>>but to block it with physical shielding.
>>
>>What might I do? Magnets, layers of steel wool and aluminum foil, or
>>what?
>
>
> lead.
>
ALL HAIL TEH TIN FOIL HAT!!1!
:)
--
/(bb|[^b]{2})/ that is the Question
ThePsyko
Public Enemy #7
http://prozac.iscool.net
_darby.crash_
It sounds like its using passive RFID. If RFID transponder is passive,
it's powered by the signal it receives from the transceiver. It
has to get a strong signal to have enough power to send a signal back. Out
here in Chicago you can get the iPass, for the toll booths,
that uses RFID. It only works if the device its placed on the windshield
of the car where it can get an unobstructed view of the toll booth
transceiver. Putting it in your glove compartment is enough to block the
signal. I bet if you just wrapped it in something reflective like aluminum
foil and tossed it in your glove compartment or under the seat, that'll be
enough to block it. If it wont open the gate then it probably cant be read.
--
Sold Out, You're wearing their uniform,
They laugh at you, you still buy more
Shut up, Listen what they say to you,
Can you believe any of its true?
Phoney leaders steal your money, that ain't funny, that's the gospel
-Poison Idea
Matt...@yahoo.com
transponder, cut legholes in another as a lead diaper so they don't
cook your 'nads with the RFI. Put the last one over your head and seal
the opening with duct tape. Soon your problems will be gone.
Colonel Flagg
bwahahahahha.
/CF
Trip
Faraday cage.
Stan
>> What might I do? Magnets, layers of steel wool and aluminum foil, or what?
>
> It sounds like its using passive RFID. If RFID transponder is passive,
> it's powered by the signal it receives from the transceiver. It
> has to get a strong signal to have enough power to send a signal back. Out
> here in Chicago you can get the iPass, for the toll booths,
> that uses RFID. It only works if the device its placed on the windshield
> of the car where it can get an unobstructed view of the toll booth
> transceiver. Putting it in your glove compartment is enough to block the
> signal. I bet if you just wrapped it in something reflective like aluminum
> foil and tossed it in your glove compartment or under the seat, that'll be
> enough to block it. If it wont open the gate then it probably cant be read.
Yeah, that sounds like it, a small plastic rectangle glued to the windshield
with no obvious opening for a battery. Even then the gate balked at opening,
so the scanner must not be too powerful.
But I wonder about RFID, if it is so easy to block the output code why stores
want to use it to deter shoplifting? Couldn't a shoplifter simply put small
items in shielded purses or fanny packs and get away with it?
Stan
Onideus Mad Hatter
Or, you could be INFINITELY less STUPID and um...just take the battery
out.
o_O
--
Onideus Mad Hatter
mhm ą x ą
http://www.backwater-productions.net
Onideus Mad Hatter
They do, many shoplifters will line their purses and bags with like
tin foil...of course often times you only need to cover it real good,
no real "shielding" required.
--
Onideus Mad Hatter
Jim Purcell
I'd do exactly what you said. Try to block the signal with all kinds of
metallic stuff. Test your sheilding with the gate. If the gate doesn't
open, consider yourself sucessful!
Jim
In article <yxwHe.1483$ns....@newsread1.news.atl.earthlink.net>, Stan
_darby.crash_
>
> Yeah, that sounds like it, a small plastic rectangle glued to the windshield
> with no obvious opening for a battery. Even then the gate balked at opening,
> so the scanner must not be too powerful.
>
> But I wonder about RFID, if it is so easy to block the output code why stores
> want to use it to deter shoplifting? Couldn't a shoplifter simply put small
> items in shielded purses or fanny packs and get away with it?
Probably would work. It's not to hard to defeat those store security
systems. Back in my criminally reckless youth I had a talent for
shoplifting, especially CDs. I used to just peel off the security tags
before I walked out of the store. Once I even missed one of the tags but
because the CD was (luckily for me) stacked behind a few other CDs in my
coat pocket, the RFID transceiver you walk through to leave the store
didnt go off. Systems like that are more for deterrence. There's a way
around everything.
A.Melon
but if it's passive, it doesn't have a battery
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Mimic
I second that, TIN FOIL HAT!!
--
Mimic
"The man who awaits the rising of the sun, cannot wait forever."
ZGF0YWZsZXhAY2FubmFiaXNtYWlsLmNvbQ== [ www.hidemyemail.net ]
Glen Arrowsmith
This is a very concerning topic in modern day society where identity
theft is an increasing threat. It is possible to read magnetic cards,
untransmitting RF generators and RFID from an an far distance and you need
to keep all those agents from spying on you as you seem like an especally
important person. As a microelectronic engineer here is the best solution to
this huge threat.
Gather up your gate remote, your ID cards, your cell phone, passport
(because of couse the feds put tracking chips in them to monitor your every
move) and all other cards or documents that you use to gain access to things
or can identify you. Even put your house keys in there as people can use
focused X-Rays to make a precise 3D map of them so they can replicate them
and gain access to your house, etc. Now put all of this stuff in your
microwave oven. As odd as it may seem your microwave shields microwaves from
coming out and in which therefore provides the best shielding that money can
buy. For added security, turn the microwave on. Dont worry about it burning
your stuff because microwaves have food detectors that direct the microwaves
to heat only the food. If you want you can add a convent carry strap to your
microwave. I hear microwaves are the new aluminum bowls. Style magazines are
calling them the privacy protection to be seen with.
Anyway I hope this helps.
Glen
"^reaper^" <knoc...@deaths.door> wrote in message
news:hus0ot88...@fallen.angel...
> While sipping absinthe, Stan heard a loud sucking noise coming from
> alt.2600, and hastily inscribed the following unintelligible Sanskrit in
> <news:yxwHe.1483$ns....@newsread1.news.atl.earthlink.net>:
> I hear aluminum bowls are all the rage these days. I hear risperidal works
> pretty well too.
>
> --
> "Far better it is to dare mighty things, to win glorious triumphs, even
> though checkered by failure, than to take rank with those poor spirits who
> neither enjoy nor suffer too much, because they live in the gray twilight
> that knows not victory nor defeat." -- Theodore Roosevelt
nemo_outis
news:42f1cd93$1...@dnews.tpgi.com.au:
>>> So how do I block the signal? I would like to make a small box to
>>> keep the
>>> transponder in that is shielded and remove it only to activate the
>>> gate. And this could also be used to shield things like identity
>>> cards, security
>>> badges, etc. that have RFID chips embedded in them. I'm not looking
>>> to jam the signal with an electronic RF circuit but to block it with
>>> physical
>>> shielding.
>>>
>>> What might I do? Magnets, layers of steel wool and aluminum foil,
>>> or what?
>>
>> I hear aluminum bowls are all the rage these days. I hear risperidal
>> works pretty well too.
I think you'll find the pouches from these folks a tad more convenient for
everyday use instead of lugging your microwave around :-)
Regards,
Glen Arrowsmith
"nemo_outis" <a...@xyz.com> wrote in message
news:Xns96A85C9F1...@127.0.0.1...
But what if he wanted to reheat a pie? He would just crack out his 800W
generator from his back pocket and zap! A nice warm pie.
-Glen
John Mason Jr
> I'm forced to live in a gated community for the next 2 years and they issue
> transponders for your car to open the gate. Since some local highways and
> bridges use transponders to collect tolls, I'm assuming their scanners can
> also detect my security-gate transponder, or maybe the gated community has
> installed hidden scanners around the development to track my movements
> within.
>
> transponder in that is shielded and remove it only to activate the gate.
> And this could also be used to shield things like identity cards, security
> badges, etc. that have RFID chips embedded in them. I'm not looking to
> jam the signal with an electronic RF circuit but to block it with physical
> shielding.
>
> What might I do? Magnets, layers of steel wool and aluminum foil, or what?
>
Easiest thing to do is wrap it in Al foil.
John
David Goldberg
Stan wrote:
Take out the batteries.
--
They say golf is like life, but don't believe them. Golf is more complicated
than that.
~Gardner Dickinson
limo...@gmail.com
any more suggestion, maybe electronic or magnetic solution out there.