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HOWTO kill/block an RFID

Posted April 25, 2008 9:00 AM

From Boing Boing:

Instructables have just published their latest installment in their series of HOWTOs inspired by my forthcoming novel Little Brother, a young adult book about kids who use technology to wrest liberty from the Department of Homeland Security. This week, it's HOWTO block or kill an RFID chip. -The easiest way to kill an RFID, and be sure that it is dead, is to throw it in the microwave for 5 seconds. Doing this will literally melt the chip and antenna making it impossible for the chip to ever be read again. Unfortunately this method has a certain fire risk associated with it. Killing an RFID chip this way will also leave visible evidence that it has been tampered with, making it an unsuitable method for killing the RFID tag in passports. Doing this to a credit card will probably also screw with the magnetic strip on the back making it un-swipeable.

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#1

Re: HOWTO kill/block an RFID

04/25/2008 10:53 PM

Sadly, none of the inactivation methods advised can work safely on an injected microchip.

There is only the single solution: surgery.

And remember when you turn up at the bank or Passport Control with your "inactivated" documentation.....you are going to have a very long wait, and perhaps not that border crossing you were hoping for.

Kind Regards....

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#2
In reply to #1

Re: HOWTO kill/block an RFID

04/25/2008 10:58 PM

The worst enemy of RF is shielding.

Aluminum foil will do well to reversibly disable the tag.

A similar sized sheet in close proximity to the tag wil do it.

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#3

Re: HOWTO kill/block an RFID

04/26/2008 6:08 AM

Any methods suggested may help terrorists in some way and thieves taking stuff from shopping malls, so may I suggest that this blog be stopped right here and now......

CR4 is not here to help in such manners.....

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#4
In reply to #3

Re: HOWTO kill/block an RFID

04/26/2008 11:39 PM

Good one

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#5
In reply to #3

Re: HOWTO kill/block an RFID

04/27/2008 9:43 AM

I agree with you.

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#6

Re: HOWTO kill/block an RFID

04/27/2008 8:50 PM

You have got to be kidding....do you really think that a shoplifter will read this forum ?

In addition, shiplifters have been using bags lined with foil for years to stop the current generation of Checkpoint and Sensormatic devices that are not even RFID based.

This is not news to them.

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#7
In reply to #6

Re: HOWTO kill/block an RFID

04/28/2008 5:51 AM

Even so, I see no reason to discuss such methods on a relatively open forum at all. Nobody really knows who is reading this......most responsible people will resist in supplying any infos that could help foreign companies or armies or terrorists....

So please just leave well alone.....

You are so secretive yourself (but want to be "open" about things that might have a negative impact!) that you have not joined CR4 and only appear as a "jest"....that does not have much to recommend it as "jest" mostly seems to actually argue with himself at times and post opposing opinions...... really funny that!!!

(Which is of course why many of us call you people "Jests", which is still far better than what most others call you, which is "Trolls".......but I did not say that first!!!! in fact it was only recently explained to me what it means today!!)

But it makes CR4 really funny reading for many of us with CR4 logons !!

If you want to be taken seriously with your comments and opinions by all concerned, please be so kind as to join CR4 properly and appear with a name, so that we can attribute your own thoughts and words to yourself!!!

Of course, if you are only trying to stir things up and amuse us at the same time, please continue as "Jest", sorry "guest".......

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#10
In reply to #7

Re: HOWTO kill/block an RFID

04/28/2008 12:26 PM

Andy,

I agree with the principle you are focused upon but Nigh has a good point also and anyone familiar with cell phone usage should recognize what it is that blocks RF so other than descriptive comments of electronic evasion we aren't breaking open any marbles.

That said what would the reasoning behind further discussion be?

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#11
In reply to #10

Re: HOWTO kill/block an RFID

04/28/2008 12:47 PM

There was a long CR4 blog about RFID last year sometime. I do not see the point in doing it all again.

The last discussion was mostly ruined by the Area 51 people......and other loonies. Worried about identity theft etc etc etc.....

I am sure that anyone really interested can still find it.

I get suspicious when people ask about how to block RFID signals. Those of us with a little electronics knowledge or better know about it and how to do it, but why do it?

So who is asking and for what reasons? I simply cannot think of a legitimate reason for wanting to do this, perhaps someone else can give us such a reason, I would be most grateful....

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#8
In reply to #6

Re: HOWTO kill/block an RFID

04/28/2008 6:28 AM

....do you really think that a shoplifter will read this forum ?

Maybe not but the thread will pop up in a Google search for the subject.

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#9

Re: HOWTO kill/block an RFID

04/28/2008 11:15 AM

Are we really advocating censoring knowledge for state security???

This isn't nuclear technology and everyone has a right to now how the technology around them works. Let's not forget the line between hacking and invention is very blurry (semantics aside).

Concerning security, information like this is a good way to establish a public knowledge that any policy of national or corporate security that relies on RFID technology is bogus, a truly secure position in preventing political posturing at our expense.

Hiding truth will not change it.

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alzie (1); Andy Germany (3); Anonymous Poster (1); bwire (2); Dead Bear (1); Nigh (1); Qqberci (1); Sparkstation (1)

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