CCTV Camera

CCTV surveillance system in BD

Closed-circuit television (CCTV Camera), widely recognized as video surveillance. Using video cameras to transfer a signal from one place to another on a certain number of monitors. The footage is exclusive. It is different from broadcast television. Though most video cameras fit this definition. In areas that need additional security or ongoing monitoring.

Surveillance of the general public is common in many areas around the world. Video surveillance has generated significant debate about balancing its use with individuals’ right to privacy even when publicly.

In industrial plants, protective equipment could also be will not observe parts of a process from a central room. For instance, when the environment isn’t suitable for humans. Surveillance systems may operate continuously or only as needed to watch a specific event.


By one estimate, there’ll be approximately 1 billion surveillance cameras in use worldwide by 2021. About 65% of those cameras are installed in Asia. The expansion has been slowing in recent years. This technology has helped produce great growth in surveillance. The methods of advanced social monitoring and control have risen. And a number of crime prevention measures throughout the planet.

History of CCTV Systems

The earliest video surveillance systems involved constant monitoring because there were no thanks to record and store information. The technology of “reel-to-reel” media has made the recording of surveillance footage possible. These systems are used to work with magnetic tapes. People used to change it. Which was a time-consuming, expensive and unreliable process. Thanks to these shortcomings, video surveillance wasn’t widespread. VCR technology became available within the 1970s, making it easier to record and delete information. Therefore the use of video surveillance became more common.

This technology was invented in the 1990s. Allowing several cameras to record directly, also as time-lapse and motion-only recording. This saved time and money which then led to a rise in the use of CCTV.


In recent years, the utilization of body-worn video cameras has been introduced for a variety of uses. For instance, as a replacement sort of surveillance in enforcement, with cameras located on a police officer’s chest or head.

Traffic flow monitoring

Many cities and main roads contain installed traffic-monitoring systems, using Closed-circuit television to detect traffic jams and investigate accidents. Many of those cameras, however, are owned by private companies and transmit data to drivers’ GPS CCTV systems.

Highways England features a publicly owned network of over 3000 Pan-Tilt-Zoom cameras covering the British motorway and road network.

These cameras will not monitor traffic conditions and aren’t used as speed cameras. The amount of cameras on Highways is probably going to increase over the subsequent few years. Due to the addition of fixed cameras for the active traffic management system.

The congestion charge is enforced by cameras positioned at the boundaries. Inside the congestion charge zone, which automatically reads the amount plates of vehicles that enter the zone. Other surveillance cameras function as traffic enforcement cameras.

Increasing safety and security in public transport

Digital Video Recorder for conveyance:

A CCTV can be installed anywhere. In trains or buses where only a driver is present, for example. Cameras can help the driver to ensure that no person is between the doors when closing.

Sporting events

Many sporting events in Bangladesh use these inside the venue for fans. To show the action while they’re far away from their seats. The cameras send the footage to a certain place. This gives the fans and other people a better view of what’s happening. They are often placed in lounges, hallways, and restrooms.

Employee monitoring

Organizations use it to watch the actions of workers. It specifies the performed operation. This helps to trace the actions of workers, especially once they are making critical financial transactions. For example, correcting or canceling a purchase, withdrawing money, or altering personal information.

Actions that an employer might need to watch could include:

  • Scanning of products, selection of products, the introduction of quantity;
  • Input and output of operators within the system when entering passwords;
  • Deleting operations and modifying existing documents;
  • Implementation of certain operations, like financial statements or operations with cash;
  • Moving goods, revaluation scrapping, and counting
  • Control within the kitchen of fast-food restaurants;
  • Change of settings, reports, and other official functions.

Some systems allow the user to look for a selected event by time of occurrence. Text description as well as perform statistical evaluation of operator behavior. This enables the software to predict deviations from the quality workflow and record only anomalous behavior.

Medical uses

Security cameras monitor patients in hospitals. For instance, children or the elderly. to identify potential medical issues, e.g. heart disease, or an asthma attack.

Use in schools

Close Circuit Devices are widely used in schools. Thanks to their success in preventing bullying, vandalism, monitoring visitors. And maintaining a record of evidence in the event of a criminal offense. Although there may be some restrictions about installation, in places where privacy may be an issue. Therefore, monitoring those areas may not be suitable.

Cameras are normally placed in hallways, parking lots, and offices. Where students and employees work. Teachers can also be an object.

A study on high school students in Israeli schools has revealed results. Students’ views are based on how they consider their teachers, school, and authorities. In other words, the majority of students don’t want Close Circuit Cameras installed inside a classroom.

Use in private homes

Many homeowners prefer to install Security systems either inside or outside their own homes, sometimes both. Security cameras are an efficient deterrent to potential intruders. Also, It increases the danger of identification through the camera footage. Most of the people will scout through affluent suburbs trying to find the simplest house to interrupt into.

Having a clear Security system, alarm, or another security measure, makes the house appear to be a harder target. In order that they will likely advance to subsequent house. smartphone applications can observe modern Security systems. It lets people observe their households or premises from anywhere. Some systems provide motion detection.

How do criminals use close circuit cameras?

Criminals sometimes use surveillance cameras to spy on the general public. For instance, a hidden camera at an ATM can capture people’s PINs, without their knowledge. The devices are small to remain hidden. They will monitor the keypad of the machine.

Even lawful surveillance cameras sometimes have their data enter the hands of individuals who haven’t any right to receive it.

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