that's a great question. i hope someone on the list knows the answer...
> Is there capability like that in private hands? Could someone do
> something like that with a laptop, a directional antenna and
> something like gnuradio - http://www.gnu.org/software/gnuradio?
Markus Kuhn at Cambridge [0] has built emanations monitoring gear for
reading laptop displays at considerable distance [1] using an R-1250
[2] (and other hardware, iiirc). this would also be possible with the
right RF front ends attached to the nallatech hardware i referenced in
another thread. (the GNU radio USRP might be suitable, but the
bandwidth limits of that device would be close, or under what was
needed for good visual capture)
gnu radio does indeed provide some of the base signal processing
components that could be used for this purpose, but the hardware, not
processing, will likely be the crux.
best regards,
0. Markus Kuhn
http://www.cl.cam.ac.uk/~mgk25/
1. Compromising emanations: eavesdropping risks of computer displays
http://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-577.html
2. Dynamic Sciences R-1250 receiver
http://www.cl.cam.ac.uk/~mgk25/r1250/
Received on Sat Mar 02 2024 - 00:57:17 CST