[Cryptography] TV set power correlates to TV channel?
Bill Frantz
frantz at pwpconsult.com
Sun Dec 4 13:57:25 EST 2016
On 12/3/16 at 4:47 AM, leichter at lrw.com (Jerry Leichter) wrote:
>Of course, you do get the question: Why would anyone bother?
>The information is already available to whoever is supplying
>you with the signal. Various slightly more intrusive
>mechanisms - how many TV's are in rooms without outside
>windows? - would be simpler, cheaper, and more reliable.
Since at one time, England collected license fees on a per-TV
basis, technology has been used to count TVs. I believe they
drove around in trucks with directional antennas and listened
for the signal from the TV's local oscillators.
Cheers - Bill
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