At 11:27 AM 10/19/2003 -0400, Jack Smith wrote:

>BTDT :)  And with high impedance drive, such that hanging a scope probe on
>the signal line would trip the system.
>
>Then one gets into interesting things such as induction monitoring, super
>high-Z input probes and the like.
>
>Shielded cables with the shield being monitored for integrity via some nifty
>techniques have also been used as part of high security systems.

The only concern I had, was making sure that you'd need enough equipment and time to draw the attention of the Marine guards.  This was the last custom system I did, office of CINCPACFLT in Hawaii.

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