It was a dark and threatening day. Thunder could be heard in the distance. Fog blanketed the building, weakening the remaining daylight. Strange sounds were heard in the basement, and the security center was called to investigate.
The guard walks anxiously along a dark and long hallway. As he turns the corner, he is suddenly confronted by…
What do Alexander the Great and Winnie the Pooh have in common?
They both have the same middle name.
A man walks into a bar and sits on a stool. After being served a beer, the bartender leaves the bar and goes into the back room. The man is alone in the bar, sipping his beer when he hears, “You’re looking pretty good. Have you been working out?” The man looks around and doesn’t see anyone.
He turns back to his beer and hears the voice again, “That’s a nice shirt. It goes well with your pants.” Again the man looks around and doesn’t see anyone.
When the bartender returns to the bar, the man says, “The funniest damned thing has been going on. Someone seems to be talking to me, but I can’t see anyone.
“Oh that,” says the bartender. “It’s the peanuts. They’re complimentary.”
This is certainly not your father’s door control systems.
Wouldn’t it be nice to be able to push a button to initiate campus-wide lockdown? What about integrating IP door access with your IP surveillance system, or controlling what floor a person can go to in the elevator? Or, maybe you would like to use the access system as a visitor management system? Well, the latest network-attached access control systems provide these advanced features as well as many others that can make it easier to control security.
Have you ever tried to take a snapshot of something that’s far away? When you are using a long distance lens (higher focal point), you probably found it hard to keep the camera steady.
The higher the focal length of the lens, the more difficult it is to stabilize the image. This problem is especially significant with very long-range IP camera. When a surveillance camera is mounted on a swaying pole, or on a ship at sea, movement can affect the quality of the video. Image stabilization is used in IP cameras to reduce the effects of this motion.
This article describes the various mechanisms used to stabilize an IP surveillance camera.
A physicist, an engineer, and a mathematician are all locked in separate burning buildings.
The physicist runs to a chalkboard, calculates exactly how much water he will need to put out the fire, runs and finds that amount, puts out the fire, and survives.
The engineer pulls out a calculator, calculates exactly how much water he will need to put out the fire, runs and finds 10 times that amount, puts out the fire, and survives.
The mathematician runs to a chalkboard, calculates exactly how much water he will need to put out the fire, declares, “There IS a solution!”, and then burns to death.
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Teacher: “If I gave you 2 cats and another 2 cats and another 2, how many would you have?”
Did you ever want to yell at someone you see on your video surveillance display? Maybe you want to tell them to get away from your parking lot or to yell at an intruder that the police are coming. Perhaps you would like to talk to someone at your door? Then you could let the delivery man enter the back door at your office.
IP audio interface systems provide connections to speakers for paging or intercom devices. This article describes how audio can be added to your network or IP camera system.
With all the gun-related tragedies at schools and other facilities, what can we do to increase our security? Securing your facility, school, sporting events, or concerts have become more complicated.
Door Access Control Concept
IP camera systems used to be enough to monitor the facility, but today we want to do a lot more. We want to prevent unauthorized access to our buildings, prevent people from bringing in weapons, and we want to provide campus-wide paging systems that keep everyone informed of any emergency.
Access control systems include more than just a door reader. They can include intercoms, cameras and even walk-through metal detectors. Each of these security systems adds another level of safety. The different components play unique roles in your overall security. This article reviews the various parts and when to use them. It provides guidance about what technology to use and an overview of how they work.
Anyone who has traveled by airplane has probably gone through a walk-through metal detector. These security devices have also been used in schools, sporting events, government offices, and concerts. They are part of a total security system that includes cameras, door access control, and emergency paging systems.
Metal detectors are effective and safe. Just like IP cameras and door access control, they add to your safety and security. Here’s how they work.
The Science Behind Metal Detectors
The metal detector utilizes the laws described by a Scottish physicist named James Clerk Maxwell (1831–1879). He discovered that magnetism and electricity are related. An example of the relationship is a coil of copper wire wrapped around a metal nail. When current is applied to the coil, the metal nail becomes magnetized.
When an electric pulse is sent through a coil of wire, it creates a magnetic field. When the field hits a metal object, it reflects back and can be detected using another coil of wire. The size and timing of the detected pulse is used to define the size and position of the object.