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 <marcus.muel...@ettus.com> 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 > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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