Asynch designs

William Donzelli wdonzelli at
Sat Aug 12 21:41:43 CDT 2006

> Don't know about processors, but Tempest had a proof of concept for intercepting I/O from kbd/video.
> (Anyone else remember Tempest? for a while they were selling big "tinfoil hat" type shields for monitors and then, suddenly,
> it went away.) Was that NSA that came up with the POC?

All you need to do is listen with a laser, and you can tell what
someone is typing - each key sounds just a bit different...

There are some interesting Tempest goodies out there, but I havbe not
seen any lately. DEC made a VT100 TEMPEST, and IBM made Tempest
versions of the PC.


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