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Security Cameras For Your Peace of Mind
The reasons for installing cctv cameras are the same whether you own a home or business. Protecting your property, family and employees is probably at the top of your list of priorities. You're not the only one that feels that way. Sales of home and business security systems have exploded in recent years. Even before 9/11, security system sales were on the rise. After the terrorist attacks, sales of home and business security cameras rose by as much as 20% over the course of three months. The rise in sales of security cameras is justified by the results. Police in most major cities say that the chances of a break-in or robbery are nearly cut in half by the presence of an obvious security camera on the premises. Business owners report that theft by both customers and employees is nearly eliminated when they install the right security camera system. And we've certainly all seen the dramatic footage taken by home security video cameras that have led to the conviction of criminals who have abused children, burglarized homes or otherwise broken the law. What can security cameras do for your peace of mind? Secure Your Business with a Security Camera System You've seen them ? the ubiquitous, all-seeing eyes of a video surveillance system in local stores. The most obvious commercial use for a security camera is to prevent loss of merchandise through shoplifting and theft. It's far from the only way that security cameras are used in business, though. Security cameras can log transactions at the cash register or ATM, monitor remote areas of the plant for safety reasons, monitor the premises after hours and ensure that your employees are treating both you and your customers fairly. Evidence taken from security camera systems has been used as evidence in sexual harassment suits, burglary trials, even murder trials. The evidence isn't always used to convict, either. In one case, the security videotapes from security video camera covering an employee parking lot were used to prove that the car of an employee could NOT have been used in a hit and run accident that took place several blocks away ? they showed the car parked in its usual spot every 2 minutes throughout the entire day. Business owners have installed security cameras at cash registers, overlooking dressing rooms, in parking garages and on loading docks. A security camera in the elevator greatly increases the safety of a building. Security cameras have been used to monitor work progress at construction sites and aid managers in making decisions about unexpected occurrences that may keep a project from completing on time. Protect Your Family with a Home Security Camera System According to police in any major city, the mere presence of a home security camera can reduce the chances that your home will be burglarized by as much as 80%. In addition, security cameras can monitor an infant's room, identify callers at the front door and allow you to view what's going on at home when you're away at the office ? or on a longer trip. Combined with remote monitoring, a security camera in your home can help alert police to a break in at your home, and provide evidence for conviction if one should happen. There are a wide variety of security camera systems to choose from for either home or business. A consultation with a professional security installation company can help you decide which is the right one for your needs. Owen Gerrard has written articles for home and business security for sites such as security cameras and cctv cameras.
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Technicalequipment won't be able to detect this. Time Domain Reflectometry is the sending of a pulse down a telephone line. If there is some sort of disruption; a wall outlet or wiretap; a portion of the pulse will besent back to the device called a Time Domain Reflectometer (TDR). Then the time difference between the reflection and the continuous run is measured. This helps in determining the distance to the anomaly.These devices can perform all sorts of diagnostics including mapping a wire network. That can be useful in locating a hidden phone. Hidden phones have several obvious uses such as making long distance phone calls to being placed in an office across the street to receive betting requests by bookies; a practice called back strapping. If you open up the modular jacks where you connect your phone, you'll usually see four wires. In most cases only two wires are connected; commonly known as ring and tip. 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These are referred to as snuffle bugs. A simple probe used in hunting wire signals has a speaker, which can display sounds. Byaccident one day I was working on an apartment intercom system while using a probe. I could hear conversations throughout the building quite clearly just through the intercom boxes mounted on walls from the master unit in the basement.If you're using wireless headsets or cordless phones, the radio signals can be intercepted. A cordless phone acts like a radio, but depending on the frequency and a few other factors, can make interception extremely difficult. With some manufacturers, you can buy the same model as your neighbors or the office and have it join their phone system. Double check Caller ID boxes to see if they also record numbers dialed besides obviously those being received. If you're using VOIP (Voice Over IP), remember that calls can be recorded in a fashion identical to intercepting data between two computers. These packets of data can reassemble an audio file. Obviously electronic devices possess semiconductor components such as diodes, resistors and such. The method to hunt for these components is called Non-Linear Junction Detection (NLJD). The NLJD unit emits a radio signal while listening for the return signal from an electronic device. This becomes very useful when a bug is embedded in a picture frame or wall. The eavesdropping device doesn't have to be active for it to be discovered. If a device is active and transmitting wirelessly (or even on a wire), you can detect it with a Radio Frequency Spectrum Analyzer. Depending on the detection device used, you can determine whether voice, data or video is being sent, and possibly listen to the data. Try to use different size antennas or buy one that collapses. Different frequencies can be detected more efficiently by using various sizes. The use of filters with antennas can also help pinpoint devices on specific frequencies. Electronics such as computers, FAX machines and especially CRT monitors can radiate electromagnetic signals or pulses that can be received by other equipment. This is known TEMPEST. One way to complicate the surveillance of this is to use certain fonts and line walls or equipment with different gauges of copper mesh wire. You can further enhance this posture by using special paints, which block radio transmissions. Radio waves will look for a leak or break, so be careful of defensive applications. One-way window tints can help in blocking signals. Since an electronic device could generate some heat they can be detected in another way. The use of a thermal imagery device can detect and actually see minute amounts of heat radiated for your viewing. You can hide the heat signatures by using creams or neoprene. Technology exists to collect information from blinking LEDs of modems, routers, print servers and similar devices. You can only see some general blinking but with the use of properly tuned optics, filters, oscilloscopes and good timing you can discern much more. One of the LEDs on your keyboard can be altered to blink while you are typing in a fashion similar to Morse Code. You can also use a tap in the keyboard that sends out radio waves again similar to Morse Code and no anti-virus software will ever be able to find it. Even when a CRT computer monitor is facing a wall the light can be in a sense read by its flickering emanations from some distance. A good defensive measure is to buy new LCD flat panel types.Another approach to attacking FAX machines is to simply record the noises it makes and play it back to another machine. I used to do this for a client so they could keep a record of all the faxes they made and received. There are creative and potentially illegal defenses against wiretappers and Peeping Toms. One is to transmit an extremely high pitch down the wire, thereby rupturing the listener's eardrums. I knew someone who once sent a powerful electrical spike down his phone wire thereby destroying his divorced wife's recorder. By the way, this leads to another topic-expect the device to be discovered someday. Don't leave your fingerprints on it. He found it and had it dusted, thereby producing some prints. My friend used this as leverage against the Private Investigator that planted it. Advice to Private Investigators, a word to the wise: if you do this part-time, hire someone who does this full-time. This P.I. lost his license and almost went to jail. The lawyer who recommended him got into a lot of trouble as well. He received some unwanted attention from the Feds because of his telephone dealings went across state lines and also happened to involve the Post Office. There is another budding field related to this topic called Protective Intelligence. Currently there are only a few experts who do this kind of work.A laser or an infrared beam can be used at a considerable distance from a target building. Conversational sounds can vibrate unto solid objects such as windows. The beam's reflection varies in relation to the movement to the window, which is received and converted back into something audible. To mask the sounds, you could attach a vibrating device (basically an altered electric razor) to the window.Of course if the window is open, then a laser can target another object instead of the window. A beam of light or laser can be directed to go through a window onto a solid object thereby nullifying such defensive measures again. Generally you really can't detect such attacks unless the laser, infrared or light beam is being used that moment. Certain materials can be used to detect IR emissions, as well as the use of passive night vision gear. Certain fabrics or even a curtain may actually show the spot where a beam of light or laser is being focused. Unless the room is dusty or you have an artificial can smoke, you can follow the beam up to a point and guesstimate it's location. One type of optical bug is an infrared transmitter. When placed in the area of interest for transmission of the conversation to an infrared receiver which will then translate the conversation into an audible format.Many of these same procedures used can be applied to locating hidden cameras. A relatively new device uses a series of lasers to seek out optics. This wasoriginally intended to locate snipers by bodyguards.I have listed the techniques, counter-measures and then the counter to the counter-measures to prevent any false sense of security. Usually constant vigilance is your best weapon besides knowing what to look for. Even if you find a "bug sweeper" with good credentials, certifications and experience, ask them detailed questions. Not just to test them but also for your own peace-of-mind. This makes our job easier and we appreciate greatly when dealing with knowledgeable customers.
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