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#51
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How detect if MP3 player is recording in your room? [OT]
On Thu, 12 Oct 2006 16:48:32 -0800, "Dana"
wrote: You man there actually is something which will detect MP3 recorders? There are devices that can detect when electronic devices are being used. There are devices that can be made that can detect almost any known material If said mp3 player is made of that material it can be detected. Which is not entirely applicable, since plenty of non-recorders are made of circuit boards, ICs & other discretes, and some plastic. Cell phone and pager are two quite common ones. Detecting electronics devices in general, is it useful? We dont know the exact scenario, what the result would be of a positive detection but as above, cell phones and pagers would tend to be caught and are going to be far more common and innocuous than a recording device, though in the former case, the phone may have recording capability too. |
#52
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How detect if MP3 player is recording in your room? [OT]
"kony" wrote in message ... On Thu, 12 Oct 2006 16:48:32 -0800, "Dana" wrote: You man there actually is something which will detect MP3 recorders? There are devices that can detect when electronic devices are being used. There are devices that can be made that can detect almost any known material If said mp3 player is made of that material it can be detected. Which is not entirely applicable, Sure it is since plenty of non-recorders are made of circuit boards, ICs & other discretes, and some plastic. Cell phone and pager are two quite common ones. Yep, and all are detectable, and all have signatures. Detecting electronics devices in general, is it useful? Depends on who you ask The OP is not the only one who wants to ensure no one is able to record conversations, or hear conversations they should not be hearing. We dont know the exact scenario, He gave the scenario. what the result would be of a positive detection but as above, cell phones and pagers would tend to be caught and are going to be far more common and innocuous than a recording device, though in the former case, the phone may have recording capability too. True enough, but the technology is there to do what is being requested. Now if the OP can afford it, or even obtain it is a different issue. |
#53
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How detect if MP3 player is recording in your room? [OT]
On Tue, 10 Oct 2006 14:22:57 -0500, Mitch Crane -three
wrote: 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. You'd be surprised where people can hide things: http://www.dailymotion.com/blog/vide...ht.blogs.co m Caution! NSFW! max |
#54
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How detect if MP3 player is recording in your room? [OT]
"kony" wrote in message ... On Thu, 12 Oct 2006 16:48:32 -0800, "Dana" wrote: You man there actually is something which will detect MP3 recorders? There are devices that can detect when electronic devices are being used. There are devices that can be made that can detect almost any known material If said mp3 player is made of that material it can be detected. Which is not entirely applicable, since plenty of non-recorders are made of circuit boards, ICs & other discretes, and some plastic. Cell phone and pager are two quite common ones. And what is a common item to circuit boards, IC's, cell phones, pagers, MP3 players, etc. There are devices made to detect the presence of semiconductors, and these have been out for ages. And now with the war on terror going on, you would not believe what kind of sensors they are coming up with. Minor modifications of some of these units would not be very difficult to detect a mere MP3 in someones pocket. But then these would not be cheap either, if you can even get one. Detecting electronics devices in general, is it useful? We dont know the exact scenario, what the result would be of a positive detection but as above, cell phones and pagers would tend to be caught and are going to be far more common and innocuous than a recording device, though in the former case, the phone may have recording capability too. |
#55
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How detect if MP3 player is recording in your room? [OT]
Well shielded (for example, wrapped to copper foil), 1.5V AAA powered device
will give EMI below ambient level. If its clock generator employs spread spectrum, it's even more difficult to detect. "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? |
#56
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How detect if MP3 player is recording in your room? [OT]
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. Just think what could be done with a parabolic microphone and a telephoto lens. 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. |
#57
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How detect if MP3 player is recording in your room? [OT]
Joey wrote: On 11 Oct 2006, Aly wrote: Joey wrote in message ... [...] Sorry for my rather unhelpful reply, I'm having one of my moments where I only talk to microcontrollers. No problems. Seriously though. There's very little in world that's so important. I've worked with people that would *record* meetings thinking they were of vital importance when in actual truth, no one could care less. I guess it would just cause people to be more careful about what they say. I'm unable to view those videos you've supplied as this is a development machine without any clutter on it. eBay could be a good place to buy such things though. All sorts of stuff comes out of the AsiaPac. This is to document something quite serious. Are you the trying to be the documenter, or trying to avoid being the documentee? Or both? |
#58
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How detect if MP3 player is recording in your room? [OT]
In comp.sys.ibm.pc.hardware.storage Joey wrote:
On 11 Oct 2006, Dana wrote: "Ken Maltby" wrote in message ... "Joey" wrote in message ... 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. It should not come as a surprise, that security concerns that deal in high level technological detection devices, don't advertise to the general public that much. Search harder. I hinted at that a couple of days ago. It has been amusing watching some of the replies from some of the people here. You man there actually is something which will detect MP3 recorders? Detection is a minor problem. Correct identification is the issue. This is likely infeasible, unless you have the specific recorder in question beforehand. And remember that you wanted to know whether it is recording. Even more difficult.... Arno |
#59
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How detect if MP3 player is recording in your room? [OT]
max wrote in
: On Tue, 10 Oct 2006 14:22:57 -0500, Mitch Crane -three wrote: 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. You'd be surprised where people can hide things: http://www.dailymotion.com/blog/vide...yuv3g7lzul2w64 rs1iaad00kom8c0ii3&play=1&referer=http%3A%2F%2Fsus iebright.blogs.com Caution! NSFW! Sure, but I don't think the MP3 recorder would work very well in there, so the point is moot. -- ybbxvatyvxrnobeantnvayvivatyvxrnurergvpyvfgravatgb neguheyrrerpbeqfznxv atnyylbhesevraqfsrryfbthvyglnobhggurveplavpvfznaqg urerfgbsgurvetrareng vbaabgriragurtbireazragnertbaanfgbclbhabjohgnerlbh ernqlgborurnegoebxra |
#60
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How detect if MP3 player is recording in your room? [OT]
On Thu, 12 Oct 2006 18:43:46 -0800, "Dana"
wrote: "kony" wrote in message .. . On Thu, 12 Oct 2006 16:48:32 -0800, "Dana" wrote: You man there actually is something which will detect MP3 recorders? There are devices that can detect when electronic devices are being used. There are devices that can be made that can detect almost any known material If said mp3 player is made of that material it can be detected. Which is not entirely applicable, Sure it is Nope, not without the scenario. since plenty of non-recorders are made of circuit boards, ICs & other discretes, and some plastic. Cell phone and pager are two quite common ones. Yep, and all are detectable, and all have signatures. You have not established that the signature (difference) of such a device can be discriminated from a different device. The scenario has not been defined enough to know if the device will be turned on within the distance of the scanner/other detection device. Random ideas that "something" similar is possible is not same as application in a specific scenario. Detecting electronics devices in general, is it useful? Depends on who you ask The OP is not the only one who wants to ensure no one is able to record conversations, or hear conversations they should not be hearing. We dont know the exact scenario, He gave the scenario. No. A hint, but not a full scenario might include something like what happens if "something" is detected, both the full purpose and result. what the result would be of a positive detection but as above, cell phones and pagers would tend to be caught and are going to be far more common and innocuous than a recording device, though in the former case, the phone may have recording capability too. True enough, but the technology is there to do what is being requested. Now if the OP can afford it, or even obtain it is a different issue. You have not established this. That some fields can be detected, that it can be known if something is running, is not same thing as knowing a digital recorder is running. This difference is quite important in many scenarios because OTHER types of devices are far more common in modern society than digital recorders. |
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