brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

2Dec/04Off

Evesdropping on CRTs

Boing Boing mentioned a paper by Markus Kuhn on reconstructing the contents of a screen by measuring the reflected light in a room with a fast photosensor. Cool stuff, reminiscent of Ross Anderson's work with Soft Tempest, which I experimented with briefly.

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