"kony" wrote in message
...
On Fri, 13 Oct 2006 16:37:24 -0800, "Dana"
wrote:


"kony" wrote in message
.. .
On Fri, 13 Oct 2006 14:42:49 -0800, "Dana"
wrote:


The point remains they are detectable.



You mean the point you never made.

Electronic devices made the point.
They exist, you may not be aware of them, but that is your issue.

It's not my issue to claim detection of different devices
proves detection of an MP3 player recording.

I never said it can detect an MP3 player recording.
I said it can detect an MP3 player, or pretty much anything electronic.


We have no reason to believe a scenario like the OP has (too
vaguely) posed,

Actually what he needs is a device to scan for electronic devices, and they
exist already. How the OP handles the knowledge of such sweeps depends on
him.
He can either ask for the people to remove all electronic devices, or he can
watch what he says.


would allow identification of a device as an
MP3 player that is recording.

Not recording, but its existence. Its existence can be determined, and it
does not have to be on, as there are devices that look for semiconductor
junctions(pretty much any electronic device that has at least a diode in
it).

Identifying the existence of
"some" kind of device, then a search uncovering this device
and a physical examination to determine that it is recording
(looking at the screen or lights) is another matter.

True, but the OP would know there is some kind of elctronic device on the
person that may be capable of recording. How the OP uses that info is up to
him.