Re: [Discuss-gnuradio] detecting covert RFID scans

[Marcus Müller]

Hi Karl,

ah! I didn't consider these (they are not the electronic ID/payment card types Daniel was considering, I think?).
Good point; any info on the overal bandwidth these systems might use?

Cheers,
Marcus

On 12/27/2015 10:46 PM, Karl Koscher wrote:

There are also far-field RFID systems, such as the EPC Gen2 standard that was intended to replace product barcodes but has found itself in other applications such as toll road tags and DHS-compliant IDs.

One potential problem with trying to detect these systems with GNU Radio is that the tags themselves will operate over a wide frequency range (e.g. the entire 900 MHz ISM band), so the readers will hop around the band for FCC compliance.

On Sun, Dec 27, 2015 at 10:03 AM, Marcus Müller <address@hidden> wrote:

The problem is that technically, the energy sent out by an RFID reader
isn't big enough to detect readers from afar; they are near-field
devices, as opposed to the typical far-field antenna based radio
transmitters.

Cheers,
Marcus

On 12/27/2015 06:01 PM, Daniel Pocock wrote:
>
> I did a search for RFID on the wiki and it didn't find anything
>
> http://gnuradio.org/redmine/projects/gnuradio/search?utf8=%E2%9C%93&wiki_pages=1&q=rfid
>
> Looking through the mailing list history there have been some
> discussions though, e.g.
>
> https://lists.gnu.org/archive/html/discuss-gnuradio/2006-10/msg00296.html
>
> One interesting GNU Radio use case that comes to mind is to build some
> kind of device that can sniff covert attempts to scan RFID cards.  It
> would be interesting to carry the device around shopping malls and
> railway stations and discover the locations of all the hidden scanners
> that are tracking people these days.
>
> Regards,
>
> Daniel
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio


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