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Superuser. In computing, the superuser is a special user account used for system administration. Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor. In some cases, the actual name of the account is not the determining factor; on Unix-like systems, for example, the user with ...
A sailor checks an identification card (ID) before allowing a vehicle to enter a military installation. In physical security and information security, access control ( AC) is the selective restriction of access to a place or other resource, while access management describes the process. The act of accessing may mean consuming, entering, or ...
Federated identity. A federated identity in information technology is the means of linking a person's electronic identity and attributes, stored across multiple distinct identity management systems. [1] Federated identity is related to single sign-on (SSO), in which a user's single authentication ticket, or token, is trusted across multiple IT ...
In Unix systems, the username is correlated with a user identifier or user ID. Computer systems operate in one of two types based on what kind of users they have: Single-user systems do not have a concept of several user accounts. Multi-user systems have such a concept, and require users to identify themselves before using the system.
Authorization is the responsibility of an authority, such as a department manager, within the application domain, but is often delegated to a custodian such as a system administrator. Authorizations are expressed as access policies in some types of "policy definition application", e.g. in the form of an access control list or a capability, or a ...
The OpenID logo. OpenID is an open standard and decentralized authentication protocol promoted by the non-profit OpenID Foundation.It allows users to be authenticated by co-operating sites (known as relying parties, or RP) using a third-party identity provider (IDP) service, eliminating the need for webmasters to provide their own ad hoc login systems, and allowing users to log in to multiple ...
Password. A password, sometimes called a passcode, is secret data, typically a string of characters, usually used to confirm a user's identity. Traditionally, passwords were expected to be memorized, [1] but the large number of password-protected services that a typical individual accesses can make memorization of unique passwords for each ...
Microsoft account logo. A Microsoft account or MSA (previously known as Microsoft Passport,.NET Passport, and Windows Live ID) is a single sign-on personal user account for Microsoft customers to log in to consumer Microsoft services (like Outlook.com), devices running on one of Microsoft's current operating systems (e.g. Microsoft Windows computers and tablets, Xbox consoles), and Microsoft ...