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#21
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How detect if MP3 player is recording in your room? [OT]
Joey wrote in :
You say, "search them physically"? I have to tell you that I don;'t work in the sort of environment where that kind of behaviour is considered acceptable! Would an all nude work environment be acceptable? It would make hiding such devices difficult so you wouldn't have to do anything untoward like searching people. -- ybbxvatyvxrnobeantnvayvivatyvxrnurergvpyvfgravatgb neguheyrrerpbeqfznxv atnyylbhesevraqfsrryfbthvyglnobhggurveplavpvfznaqg urerfgbsgurvetrareng vbaabgriragurtbireazragnertbaanfgbclbhabjohgnerlbh ernqlgborurnegoebxra |
#22
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How detect if MP3 player is recording in your room? [OT]
Joey wrote:
On 10 Oct 2006, atec77 ""atec77 \"@ hotmail.com" wrote: 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? 3 AM with the right equipment it would be findable , now are you serious or just another one of "them"? Nope, I am not one of "them". This is very much for real. What is "3 AM". Your kidding ? do you read analogue clocks ? |
#23
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How detect if MP3 player is recording in your room? [OT]
On Tue, 10 Oct 2006 15:51:51 +0100, Joey
wrote: You say, "search them physically"? I have to tell you that I don;'t work in the sort of environment where that kind of behaviour is considered acceptable! Then the only practical alternative remaining is to have them consent to and go through a metal detector, and of course it has to be actively manned to discriminate a potential recorder from some other device, object, etc. If you find what might be an MP player, you won't be able to determine if it's recording, rather than playing, or if recording off the radio. Unless MP3 players become illegal devices, or at least clearly posted as banned on private premises, you can't justify a search or seizure either (depending on laws in your locale). If private property, the other party may still refuse a search and seizure attempt. Even scanning for such a device's radiated energy at entrance to an area, that wouldn't prevent them from turning on the device later. Unless you have the expectation that you can seize such equipment, you should follow the same guidelines you should have otherwise- not saying anything of importance in the presence of someone who can't be trusted not to repeat, reproduce, etc., in any way. Ultimately going to such extra lengths will tend to make people suspect you have something to hide and put your activities under more scrutiny. |
#24
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How detect if MP3 player is recording in your room? [OT]
On Tue, 10 Oct 2006 15:54:06 +0100, Joey wrote:
What is "3 AM". On digital clock, it would read 3:00 and the PM indicator would be off. On analoug clock, the big hand would be pointing at 12 and small hand at 3 and outside should be still dark (no sun) -- When you hear the toilet flush, and hear the words "uh oh", it's already too late. - by anonymous Mother in Austin, TX Spam block in place, no emil reply is expected at all. |
#25
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How detect if MP3 player is recording in your room? [OT]
On 10 Oct 2006, Impmon wrote:
On Tue, 10 Oct 2006 15:54:06 +0100, Joey wrote: What is "3 AM". On digital clock, it would read 3:00 and the PM indicator would be off. On analoug clock, the big hand would be pointing at 12 and small hand at 3 and outside should be still dark (no sun) What are you doing? Water divining with the twig split 90 degrees? Or searching for MP3 recorder output with the birch twig? |
#26
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How detect if MP3 player is recording in your room? [OT]
On 10 Oct 2006, Aly wrote:
Joey wrote in message ... Suppose someone visited your office or home and tried to make a voice recording using a hidden recorder. Your only real option is to hold your meetings in the middle of field, and for everyone to be naked. Aside from that, unless you work for MI5 or have alot of money then the above would be far easier. If it was that important you wouldn't be asking the question here.g Is that right? Hear this radio programme (under 30 mins). Use whichever protocol works best for you, both are the same. http://www.bbc.co.uk/radio4/science/...eingbugged.ram rtsp://rmv8.bbc.net.uk/radio4/science/beingbugged.ra |
#27
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How detect if MP3 player is recording in your room? [OT]
On 10 Oct 2006, kony wrote:
On Tue, 10 Oct 2006 15:51:51 +0100, Joey wrote: You say, "search them physically"? I have to tell you that I don;'t work in the sort of environment where that kind of behaviour is considered acceptable! Then the only practical alternative remaining is to have them consent to and go through a metal detector, and of course it has to be actively manned to discriminate a potential recorder from some other device, object, etc. If you find what might be an MP player, you won't be able to determine if it's recording, rather than playing, or if recording off the radio. Unless MP3 players become illegal devices, or at least clearly posted as banned on private premises, you can't justify a search or seizure either (depending on laws in your locale). If private property, the other party may still refuse a search and seizure attempt. Even scanning for such a device's radiated energy at entrance to an area, that wouldn't prevent them from turning on the device later. Unless you have the expectation that you can seize such equipment, you should follow the same guidelines you should have otherwise- not saying anything of importance in the presence of someone who can't be trusted not to repeat, reproduce, etc., in any way. Ultimately going to such extra lengths will tend to make people suspect you have something to hide and put your activities under more scrutiny. Thanks Kony. So the MP3 recorder is essentially undetectable during its operation. OK. Thanks. Maybe that explains why I can't find any follow-on products for tape recorder detection while many of the the older devices are no longer available. |
#28
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How detect if MP3 player is recording in your room? [OT]
Joey wrote in :
On 10 Oct 2006, Slow Code wrote: Joey wrote in : 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? There probably is a little electro magnetic energy leaving the device, but what frequency would you try to find it on? Other electronic things such as computers, printers, etc in the office most likely emit far more RF noise than the MP3 device. It would be hard to find it. Eventually, the power would run down and the thing would stop recording. Someone would have to come by again and pick up the recorder. So your best bet is to be on the lookout for any suspicious recorder placement and pick up activity. Or just buy a stereo for your office and play it real loud all the time. Maybe belch and fart a lot too. SC The situation I describe is where the MP3 plater/recorder is carried by the person. Well in that case, the farting and belching should work to keep them away and presto, no recordings, but you'll have to live with the stinky smell. SC |
#29
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How detect if MP3 player is recording in your room? [OT]
Slow Code wrote: Joey wrote in : On 10 Oct 2006, Slow Code wrote: Well in that case, the farting and belching should work to keep them away and presto, no recordings, but you'll have to live with the stinky smell. help ham radio SC turn in your license SC |
#30
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How detect if MP3 player is recording in your room? [OT]
"Joey" wrote in message ... "Joey" wrote in message 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? On 10 Oct 2006, Ken Maltby wrote: What is done is to generate a pattern of sound, only part of which is audible, and then detect the low level IF and RF that any sound equipment emits. Then follow the signal detected to its source. Luck; Ken Generate a pattern of sound part of which is inaudible? Acoustic energy then, what the microphone/audio detection picks up. (It will cover more frequencies that humans can hear.) The pattern is on at a particular time then off, it varies in certain ways that will enable further analysis of any: IF and RF? Intermediate Frequencies (IF) or Radio Frequencies (RF) given off by a device reacting to the pattern of sound. If there is any IF or RF detected that corresponds/matches the on off times of the pattern of sound, you know there is a device responding to the sound in the room. A more sophisticated analysis of the detected response to the pattern, can provide a great deal of information about the device detected. That would be beyond the scope of your question, and your security clearance, as well. Luck; Ken |
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