* Access control

* Access control

Access control is not standardized, though there has been work on it and there are commonly used models.

* Access control

* Access control is the ability to permit or deny the use of a particular resource

Access control refers to exerting control over who can interact with a resource.

Access control is, in reality, an everyday phenomenon.

Access control door wiring when using intelligent readers

Access control decisions are made by comparing the credential to an access control list.

Access control readers may be classified by functions they are able to perform:

Access control readers may also be classified by the type of identification technology.

Access control system using serial controllers

Access control system using serial main and sub-controllers

Access control system using serial main controller and intelligent readers

Access control systems using serial controllers and terminal servers

Access control system using network-enabled main controllers

Access control system using IP controllers

Access control system using IP readers

Access control door wiring when using intelligent readers and IO module

In any access control model, the entities that can perform actions in the system are called subjects, and the entities representing resources to which access may need to be controlled are called objects ( see also Access Control Matrix ).

Access control models used by current systems tend to fall into one of two classes: those based on capabilities and those based on access control lists ( ACLs ).

Access to these systems varied from single to multiple modem lines with some requiring little or no confirmed registration.

* Access authorization restricts access to a computer to group of users through the use of authentication systems.

Like Access, it can be used as a front-end for various database systems, including Access databases ( JET ), ODBC data sources, and MySQL or PostgreSQL.

The most widely implemented open protocols for the MUA are the Post Office Protocol ( POP3 ) and the Internet Message Access Protocol ( IMAP ), but many proprietary systems exist ( Exchange, Lotus Domino / Notes ) for retrieving messages.

Access to an alternative pointing device has become even more important for them with the dominance of graphically-oriented operating systems.

Access controls may be discretionary in ACL-based or capability-based access control systems.

Although CSMA / CA has been used in a variety of wired communication systems, it is particularly beneficial in a wireless LAN due to a common problem of multiple stations being able to see the Access Point, but not each other.

As computer technologies have improved, crossbar switches have found uses in systems such as the multistage interconnection networks that connect the various processing units in a Uniform Memory Access parallel processor to the array of memory elements.

Larger computer systems might use newer architectures such as NUMA ( Non-Uniform Memory Access ), which dedicates different memory banks to different processors.

Their efforts, particularly as critics of the less technically profound work of the TRUSIX Access Control List ( ACL ) Subcommittee, survive in the IEEE POSIX 1003. 6 " security extensions for portable operating systems environments " specification.

The basic service consists of compute, storage, Microsoft SQL Azure, and Windows Azure AppFabric technologies such as Service Bus and Access Control Service, with options for interoperating services covering implementation and migration of applications, system building, systems operation, and support.

In resemblance to CBAC, an Entity-Relationship Based Access Control ( ERBAC, although the same acronym is also used for modified RBAC systems, such as Extended Role-Based Access Control ) system is able to secure instances of data by considering their association to the executing subject.

* Innovation Access Method, a high-performance indexed access-method for IBM's z / OS and OS / 390 operating systems that provides a transparent alternative to IBM's VSAM

* 2009: Robert H. Dennard for his invention and contributions to the development of Dynamic Random Access Memory ( DRAM ), used universally in computers and other data processing and communication systems.

* Advancing Media Rights and Access: goal is to " promote universal access, open systems and diversity in the media ".

Access control in computer systems and networks relies on access policies.

* oBIX — open Building Information Exchange, an extensible XML specification for enterprise interaction with building-based ( or other ) control systems, including HVAC, Access Control, Intrusion Detection, and many others.

FDMA, like other Multiple Access systems, coordinates access between multiple users.

* Client Access License, operating systems and software licence scheme

* XACML-The Extensible Access Control Markup Language together with its Privacy Profile is a standard for expressing privacy policies in a machine-readable language which a software system can use to enforce the policy in enterprise IT systems.