Technique gets clear images from light reflected off blank paper
1–9 of 9 posts
Re: Technique gets clear images from light reflected off blank paper
#2Totally different concept, but this reminds me of the anecdotes my professor would tell us about the possibility of eavesdropping on a monitor (CRT then) based on the light radiation emitted, and not from seeing the actual image itself
Re: Technique gets clear images from light reflected off blank paper
#3Totally different concept, but this reminds me of the anecdotes my professor would tell us about the possibility of eavesdropping on a monitor (CRT then) based on the light radiation emitted, and not from seeing the actual image itself
Maybe he was talking about project TEMPEST https://en.wikipedia.org/wiki/TEMPEST
Re: Technique gets clear images from light reflected off blank paper
#4Article describing novel way to produce images, yet no images produced in article.
Further investigation finds a few thumbnails an a paywall.
Re: Technique gets clear images from light reflected off blank paper
#5Article describing novel way to produce images, yet no images produced in article. Further investigation finds a few thumbnails an a paywall.
I grabbed the images from the PDF paper and put them here:
Figure 1: http://i.imgur.com/imfvc.png Figure 2: http://i.imgur.com/xKIOv.png Figure 3: http://i.imgur.com/GevEd.png
Re: Technique gets clear images from light reflected off blank paper
#6Interesting stuff!
There's also an article about it on Petapixel: http://www.petapixel.com/2012/07/16/researchers-develop-came...
and the full academic paper is available here: http://arxiv.org/pdf/1202.2078.pdf
Re: Technique gets clear images from light reflected off blank paper
#7Totally different concept, but this reminds me of the anecdotes my professor would tell us about the possibility of eavesdropping on a monitor (CRT then) based on the light radiation emitted, and not from seeing the actual image itself
I don't have a link to the paper, but I recall reading a whitepaper about it as far back as 2002.
Re: Technique gets clear images from light reflected off blank paper
#8Totally different concept, but this reminds me of the anecdotes my professor would tell us about the possibility of eavesdropping on a monitor (CRT then) based on the light radiation emitted, and not from seeing the actual image itself
You're thinking of Optical Time-Domain Eavesdropping Risks of CRT Displays by Markus G. Kuhn in Proceedings of the 2002 IEEE Symposium on Security and Privacy, Berkeley, California, 12–15 May 2002.
Available here: http://www.cl.cam.ac.uk/~mgk25/ieee02-optical.pdf
Pretty amazing that this actually works, just using a high-speed photo-sensor – and doesn't even require line of sight, a reflection off a wall is enough. Unfortunately, I don't think it will work on LCD screens.
Re: Technique gets clear images from light reflected off blank paper
#9At last! Something that comes close to explaining the "seeing around a corner in a scanned picture" scene in Blade Runner...