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27 Comments
- MarkStrube, on 10/12/2007, -0/+2"I wonder if this is legal..."
Let the brainwashing continue... ever gone over the speed limit? - MortenAaserud, on 10/12/2007, -0/+1a Little bit of it i understand it emulates track2 of a card but not much of the Schematic
- xandroz, on 10/11/2007, -0/+1An article about how information are stored on a magnetic card:
http://www.jaec.info/Home%20Automation/Magnetic-Cards/Magnetic_Cards_introduction.php - webcrumb, on 10/12/2007, -0/+1You know, this could be seen as a preparatory act to terrorism, and therefore subject to the new anti-terror laws brought in in Britain. Best not to access materials that may "facilitate potential terrorist activity," esp. w/GHCQ, Eschelon et al.. Viva la Government!
- TwizzleNicole, on 08/04/2009, -0/+1This reminds me of a documentry I watched on ex shop lifters. They used to line the inside of their bags with tin foil to stop the door sensors going off if they put items with a security tag in their bags.
- dilbert, on 10/12/2007, -0/+0"...academic purposes such as brute-forcing for an authorized card for a door lock."
Uhuh....sure....academic purposes.
"No officer, I was just checking my new cool homemade gadget".
I wonder if this is legal. Nice tech though. - spy1325, on 10/12/2007, -1/+1this is from hackaday... comments are there lol
- silverdragon, on 10/12/2007, -0/+0It sounds cool
- JayG25, on 10/12/2007, -0/+0I cant see this working.... I guess I'll have to build it and see (or try, the schematic isnt very good.)
- ViceVirtue, on 10/12/2007, -0/+0Could someone please explain it a little?
The site doesnt say how the data changes as the card is swiped... how does it know wherethe magnetic reader is so that it can give the right signal back?
(for eg: if the card is half-way along the stripe then it should give certain flux etc etc changing very quickly)
or does the card go into the reader and remain stationary while the signal is played to the reader? - gwarm02, on 10/12/2007, -0/+0Front page and no comments. Does anyone understand this article at all?
- inactive, on 10/12/2007, -0/+0Hmmm, studying for fun and profit :)
- carlf., on 10/12/2007, -0/+0It's kind of weird, in part because he refers to an inductor as a solenoid, which is a very different thing. Some of the component values are missing, too, but I suspect that they aren't critical. The basic idea, though, is that the circuit generates magnetic fluxes similar to what swiping a card through a reader would generate. The inductor takes the place of the magnetic strip.
- Sumyunguy, on 10/12/2007, -0/+0ummm...like wow batman. Show me it works and maybe you get a dig
- jasonhazel, on 10/12/2007, -0/+0@youngcoder: i want to see how well this actually works. i have 120 rooms that each have a unique code. it's better to test something like this on as many different locks as possible.
- quasi8, on 11/19/2007, -0/+0Is there any commercialy product like this
- Yaa101, on 10/12/2007, -0/+0This is a kinda reverse approach to this subject.
Main purposes for this are, reverse engineering of protocol signals given/read by the card-reader.
In short words this is to check out the reader, not the card.
Like all things this has legitimate and illegitimate purposes.
This is handy for developers of card readers and people checking up, building their own variants, which is not a forbidden thing.
Magnetic cards and readers is a rather open market and not only used in secret or high tech environments. - rrittenhouse, on 10/12/2007, -0/+0Where at in ohio :)
- jasonhazel, on 10/12/2007, -0/+0anyone build one in ohio? my hotel has 120 rooms, plenty of readers to test it out.
- sagedude, on 10/12/2007, -0/+0I remember reading this article 3+ years ago. Was usefull then but nowdays it would be alot easier for someone interested in these black arts to purchase a relatively cheap, used msr206.
- BIllyBobFett, on 10/12/2007, -0/+0For people not understanding how magnetic card readers work, here it is, according to my physics professor last year. The card reader has one sensor that senses changes in the magnetic field. When you put your card in and take it out, the sensor detects the changes in the field as the magnetic strip quickly slides past it. This emulation device produces those same changes using a small electromagnet controlled by a microcontroller, even though nothing is moving. So it can work.
Also, regarding the comment about the electromagnet being called a solenoid, "solenoid" can be a general term for a coil of wire meant to produce a magnetic field.
http://en.wikipedia.org/wiki/Solenoid - dcipjr, on 10/12/2007, -0/+0Who would do this?! Too much effort, and it involves dealing with the PIC. I'm a computer engineering student; I had to use the PIC and I hated every second of it, haha. Oh well, digg anyway.
- inactive, on 10/12/2007, -0/+0"anyone build one in ohio? my hotel has 120 rooms, plenty of readers to test it out."
You want to brute force your own hotel? - ViceVirtue, on 10/12/2007, -0/+0According to those in the vL IRC this article is from late 2003 - I'd love to see some active development on the idea
- tylerman, on 10/12/2007, -1/+0sarah conner showed me this
- inactive, on 10/12/2007, -1/+0What I want to know is how to deactivate the magnetic tickers inside library books. I hate it when I take the book out and the damn staff did a sloppy job deactivating the book thus setting off the alarm.
- linker3000, on 10/12/2007, -1/+0On the other hand if you have a reader/writer you could just keep reprogramming a blank. Seems like overkill (and yes I DO understand the schematic as I am a qualified electronics engineer).
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