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Door Access Control

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Door access control is used for safe and convenient entry and exit. Entries into restricted areas must be manually authorized prior to allowing entry. The door access control system gives employers, authorized employees, or tenants with reliable and safe access to all areas of their business. Door entry systems for doors can restrict and regulate who, when, and where people can gain access to the right areas. This system is often integrated with other security measures such as security cameras, burglar alarms, or other similar technology.

An employee can gain access to restricted areas in a company through different means. These may include use of security pass codes, access control cards, smart card readers, or proximity cards.door access control system  on the other hand, employ a different kind of mechanism. Rather than controlling access through codes, users can now choose from a variety of permissions that have been pre-programmed into the system.

Single door access control systems allow individuals to gain access to particular rooms or areas. They may be used to prevent unauthorized entry, or to provide a way to limit access to specific areas. Multiple levels of access may also be available. Multiple levels can be controlled by a single set of codes, making the system more versatile. These systems have enabled many companies and homes to greatly restrict access to specific areas and offices, while still allowing for quick and easy accessibility by key or code.

The two main types of access control systems are networked and standalone. Networked access requires devices such as computer networks and access servers to allow users to gain access. Standalone access systems are not networked and are usually housed on a single server or in a closet, thus giving them an advantage over other systems.

Networked access systems are usually housed in data centers that can be accessed by networked computers. These often include redundant power supplies, telephone lines, secure personal computer networks, and security hardware. These are extremely reliable, but because of the need for constant back up, a backup system is built into the system, which can take the place of many of the hardware components of a standalone system. This means that a power outage or phone line failure can temporarily deny access to individual door access control systems.

Standalone access doors use devices such as access doors, key pads, or proximity cards to grant or deny access to areas. Permissions are granted or denied by individual users or groups. There is no requirement for a server or other infrastructure to support the system. Simple user access mechanisms are usually integrated into the system. These include either a handheld card reader or a fingerprint door lock, which only requires the user's fingerprint to open the door.

Networked access control systems, on the other hand, use a central database to track user permissions. Each user's access token (key), password, or access code is entered into the database, along with a list of all privileges that user holds. The system will check the privilege level for each user and assign permissions to those users. If one user has an authorized password, but the password is shared among several other users, the shared access token is used instead of a unique, hard-to-guess password.

For many organizations, third-party vendors allow users to gain access points through a browser interface or through a software program. With this type of system, access points are attached to doors via a wireless Ethernet cable or through radio-frequency technology. Some systems work with computers that already have wireless networking installed, while others require that a separate license be purchased to attach a wireless modem to a door. Regardless of the method for gaining access, remote access points offer a more convenient method for employee access control.

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