On 25/09/06, Martin Fitzpatrick <[EMAIL PROTECTED]> wrote: > On 25/09/06, Neil Greenwood <[EMAIL PROTECTED]> 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 ( > http://en.wikipedia.org/wiki/Television_licensing_in_the_United_Kingdom > ) 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. Neil. -- ubuntu-uk mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk
