relevant links... RS232 emanations (even while using shielded cables.) http://jya.com/rs232.pdf Expansion of van eck's original work to go from the "tv tuning" model to full digital conversion (from turkey): http://www.uekae.tubitak.gov.tr/informat.pdf phillip

-----Original Message----- From: owner-cypherpunks@Algebra.COM [mailto:owner-cypherpunks@Algebra.COM]On Behalf Of Eugene Leitl Sent: Monday, August 20, 2001 3:42 PM To: Faustine Cc: cypherpunks@lne.com Subject: Re: Bomb Law Reporter - special edition

On Mon, 20 Aug 2001, Faustine wrote:

...

emissions are simple to decode. Though in theory LCD screens emit less than a VDU, recent EMC controls have greatly reduced emanations from VDUs--with the result that the graphics card will often be the greatest source of compromise.

I'm not an expert. However, you can make extremely silent devices. It's not rocket science, and one of the major points towards wearables. A LART board burns about 1 W, and a hud type of display is low power. With less than braindead engineering this is trivial to shield. A hud which contains a built-in framebuffer will be essentially impossible to detect. If you want to grow fancy, you can even encode the serial links sending commands to it.

Can anyone give me real world data on HF signature of a Twiddler2?