[time-nuts] webcam app to watch for and time stamp changes

Poul-Henning Kamp phk at phk.freebsd.dk
Sun Mar 3 04:00:14 EST 2013

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In message <657D7F7CC03849419A2A90752E6A60A6 at pc52>, "Tom Van Baak" writes:

>When playing with watches a while ago I tried to pick up any 32
>kHz signal but failed. Those with 1 Hz stepper motors were easy,
>but LED or LCD displays were too electro/magnetic/acoustic quiet
>for me to ever detect anything.

Most LCD and LED clocks have a shielding metal-coating on the front
glass, exactly to eliminate all EMI/EMC issues.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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