[Abbenay] Using an AVR as an RFID tag + rant + project

[Ged Wed]

eh i hamessed around with these systesm for years as an architect,

they are crazy expensive

g

On Sat, Jan 23, 2010 at 7:17 PM, Sebastian A. Liem <sebastian at liem.se>wrote:

> I'm interested, lets talk on in person.
>
> On Sat, Jan 23, 2010 at 6:43 PM, Leo Nordwall
> <nordwall at interactingarts.org> wrote:
> > OMG.
> >
> > A programmable chip and a resistor is all it takes to make a tag!
> >
> > http://micah.navi.cx/2008/09/using-an-avr-as-an-rfid-tag/
> >
> > There is source code for making EM4102 tags. That is the most common tag
> in
> > the world as far as I know. It has no encryption and basicly transmits a
> > number sequence when there is a reader sending radio waves to it.
> >
> > It is used for many things, for example in almost every residential
> access
> > control card system, in booking systems, some library cards, hotels,
> baggage
> > claim systems, rental etcetera. I'd say that residential access control
> is
> > the most common use, for booking washing machines, to open doors to
> storage
> > spaces, bike parking and so on. That tag type is not used in subway or
> bus
> > ticketing systems.
> >
> > The wholesale of tags to landlords in Sweden is more or less monopolized
> by
> > a company called Aptus. I believe that a majority of companies owning
> > residential real-estate have been investing heavily in these insecure
> > systems to save money and increase profits by eliminating the need of
> people
> > working on location with maintenance. As an added bonus, you can also
> > surveil and track residents. I'm still puzzled by the decision process
> > behind these expensive orders.
> >
> > Didn't anyone check if the new system was secure before wasting soo much
> > money on basicly removing all locks everywhere? I am writing an a feature
> > article for a large Swedish magazine on these matters. I'm also a bit
> > worried about being tracked - even though I haven't even done anything!
> > What's up with that? In order to expose this, I've done lots of research
> (in
> > public sources mind you), so that I can make statements that are based on
> > actual facts.
> >
> > It's also a very interesting technology, which unfortunately only seems
> to
> > be used for tracking people and making things unsecure and generally
> > dangerous for everyone. :) I have a RFID reader and a few EM4102 tags but
> > would like to test if methods like the one mentioned in the article
> (there
> > are several others) actually works. It has to be tested. (Responsibly.)
> It
> > would be quite a scandal if it did and if it was easy to do. I can
> imagine a
> > few people in positions of authority who might have to reconsider such
> > irresponsible deals in the future. We'll see.
> >
> > If you are interested in helping out with this research, write on the
> list,
> > write directly to me or talk to me at a meet. I'm currently not on a
> > deadline.
> >
> > // Simulacra
> >
> > PS. I realize this kind if enquiry is a bit sensitive but think I've been
> > clear enough about the purpose (journalistic) and limits of this
> research.
> > On this matter the Swedish law is very firm - it is illegal to surveil
> > journalists in order to acquire information about the identity of someone
> > who has provided information for these purposes. It's also illegal for
> > journalists to expose people to the authorities. This goes if you are
> > requesting to remain anynomous. (Which I will assume if anyone is
> interested
> > in discussing this unless one chooses not to be anynomous.) This is
> > regulated in Grundlagen i 1 kap. 1 § 3 st tryckfrihetsförordningen
> > (TF)<https://lagen.nu/1949:105#K1P1S3>which actually is an interesting
> > read. Read it.
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> >
>
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