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. Rather, it is
your burden to be specific with the claim that it's possible
by showing even one reproducible example.

We have no reason to believe a scenario like the OP has (too
vaguely) posed, would allow identification of a device as an
MP3 player that is recording. 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.