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by salawat
2721 days ago
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http://www.dslreports.com/forum/r28362704-RFID-sim-cards-goo... https://patents.google.com/patent/US7784693B2 Neat read, and Godspeed. Not sure whether your theories on there actually being an infrastructure for doing these sorts of things is correct, but even a 5 minute google search seems to suggest it is well within technical capabilities to do so. Might do some more searching for ISO's and other Engineering standards related to them. Telephony is highly dependent on uniform technical standard adherence, so it's out there somewhere. I doubt that the RFID is in the plastic containg the card, it's probably in the card itself. The unusual coincidences should be pretty easy to replicate with a P.O. Box, and could be consistent with holding times for information propagation or authorization. Definitely seems like something to mess with if you are bored! You'll be amazed the things you can find out when you start to peel back the layers, but don't be disappointed if it's just a coincidence. |
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The infrastructure would just be an (perhaps surveillance grade) RFID reader and a small office or locker where the suspect letters end up at each post sorting facility, so a security officer or perhaps just the branch manager can store these until the surveillance state replies what to do with the letter.
I also believe it is probable the standards are visible somewhere, just like I remember the bulk of the surveillance state in Europe was/is visible pre-snowden in very high detail through the ETSI (european technology and standards institute) standards.
> I doubt that the RFID is in the plastic containg the card, it's probably in the card itself.
I may have used the incorrect word with "contain", so first the SIM card and the PIN and PUK card are one and the same card, before breaking out the SIM card. I mereley suspect the larger PIN/PUK card to contain the RFID coil, because the perforated C-shape around the SIM has the open part of the C directed at the closest edge. Of course it is possible that the RFID coil is in the smaller piece of SIM card itself, but I don't think so because: the contact pads would provide shielding to the coil, and to have the same total area as a 4 turns in a Credit Card size, the coil would need many more loops. As a designer I would prefer putting the RFID loop in the larger card.
So I did not mean to say that the coil is in the plastic wrap or anything, in case that was how you understood me.
It may seem weird that (if I am right) the surveillance state designed the SIM cards so the connection with the RFID coil breaks, why not design it monolithically such that you can also track used SIM cards in the mail? I simply predict that there is demand for clean SIM cards on the market, and unopened prepaid packages are considered clean, but then the coil is not broken yet... so used SIM card's may turn out safer (if the previous usage was clean)...
I agree the holding times would be roughly reproducible, but I don't want to cram my file full of red flags...
Yeah, spying involves lots of deceit, and as everyone (hopefully) rememmbers from kindergarten, the web of lies only grows (and the observable inconsistencies grow with them)
If it hadn't been stalled, I would probably have ended up calling some friends from university time, probably only spent 2/3's of the call credit before it expires, then simply went on with my life. It's their reckless tradecraft that betrayed them. I have no problem talking openly about what I suspect, I am pretty sure plenty of actual criminals have noticed this before me, but they probably don't talk about it in public fora...