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> These cannot be found by spy detector gadgets because except at one frequency there's almost nothing to be found Doesn't RF spectrum analyzers exist that cou
by tcgv 6y ago
> These cannot be found by spy detector gadgets because except at one frequency there's almost nothing to be found
Doesn't RF spectrum analyzers exist that could be employed for this purpose?
This also reminded me of a paper I read about some years ago, seems like a great use case for it:
- Drawing inspiration from nature to build a better radio: New radio chip mimics human ear, could enable universal radio
[1] https://news.mit.edu/2009/bio-electronics-0603 https://news.mit.edu/2009/bio-electronics-0603
- sneak 6y agoNot touching the rest of their comment, but I think they mean "except at one [illumination] frequency": that is to say, they emit nothing until you transmit them energy at a specific (usually microwave) frequency, and then they reflect/modulate it back out, carrying the audio data. They are passive/unpowered otherwise. https://en.m.wikipedia.org/wiki/The_Thing_(listening_device) https://en.m.wikipedia.org/wiki/The_Thing_(listening_device)
- SAI_Peregrinus 6y agoAny spectrum analyzer with a tracking generator (TG) could be used to find one. Sweep the spectrum with the TG off, save the waveform as a reference. Then turn the TG on, measure the return strength, watch for where it jumps above the reference. I've got a device capable of this as a hobbyist (Siglent SSA3021X-TG). Such bugs are undetectable by cheap equipment, but we've known about them for decades and any competent counterintelligence team will be able to spend the extra 2-3 thousand dollars for a good detector. It's chump change.