[ubuntu-uk] Ubuntu & TV licensing
neil.greenwood.lug at gmail.com
Mon Sep 25 13:33:18 BST 2006
On 25/09/06, Martin Fitzpatrick <martin.fitzpatrick at gmail.com> wrote:
> On 25/09/06, Neil Greenwood <neil.greenwood.lug at gmail.com> wrote:
> > Various people mentioned TV Detector Vans.
> > These can certainly pick up computer monitor output (I'm not sure
> > about LCD screens, but CRTs work the same way if they're for TV or
> > computer).
> I was always under the impression TV Detector Vans were a myth and
> they just drove around to addresses that didn't have licenses (much as
> they do now). I checked Wikipedia (
> ) but it's not entirely clear either!
I used to think the same, but then I read about the Tempest technology
and the lengths that the military go to in order to prevent snooping
at computer monitors.
I know the incentive for looking at a TV screen is less than that for
reading classified documents that are being viewed, but the level of
detail that the TV detector needs is also much lower - you only need
to see that it's a TV picture and not a computer screen.
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