Thread: How detect if MP3 player is recording in your room? [OT]
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Old October 19th 06, 02:07 AM posted to comp.sys.ibm.pc.hardware.storage,alt.comp.hardware,sci.electronics.equipment,rec.radio.amateur.misc
mike mike is offline
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First recorded activity by RadioBanter: Aug 2006
Posts: 9
Default How detect if MP3 player is recording in your room? [OT]
Joey wrote:
Suppose someone visited your office or home and tried to make a voice
recording using a hidden recorder.

If they used a older-style dictation machine based on tape then you
could detect the electromagnetic transmissions from the dictation
machine when it was recording.

But how would you detect if someone was secretly recording with an MP3
player that recorded to flash memory?

Is there some transmission which could be detected?
Perhaps some low power ultra high frequency from chip refresh cycles?
WEll, you could just stick an antenna up next to the player
and see.
This is what a sandisk looks like playing mp3s.
Can you tell which trace is of the sandisk?
Reading the title is cheating...
http://nm7u.tripod.com/homepage/nothin.jpg
http://nm7u.tripod.com/homepage/sandisk.jpg
mike
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