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Unique identifier. A unique identifier ( UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. [1] The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type .
Universally unique identifier. A Universally Unique Identifier ( UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier ( GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique.
User identifier. Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access. The password file maps textual user names to UIDs.
IUID - Item Unique Identification is the strategic system implemented by the DoD to enhance the traceability of the property. UID - Unique Identification, the term UID is commonly used for different things and sometimes used in place of IUID, and thus can be a source of confusion. Generally, "The UID" refers to the physical mark on the asset or ...
In computing. Unique identifier for a specific user of a computer system. Unique ID for the Mifare series of chips (integrated circuits) used in contactless smart cards and proximity cards. Unique ID of a message in a folder on an IMAP server. User identifier (Unix), a code identifying each user on a Unix and Unix-like systems.
Aadhaar ( Hindi: आधार, lit. 'base, foundation'; sometimes informally called UIDAI ID or UIDAI Number) [7] is a 12-digit unique identity number that can be obtained voluntarily by all residents of India, based on their biometrics (10 finger prints, 2 iris prints and photo of face) and demographic data. [8] The data is collected by the ...
A Taxpayer Identification Number ( TIN) is an identifying number used for tax purposes in the United States and in other countries under the Common Reporting Standard. In the United States it is also known as a Tax Identification Number ( TIN) or Federal Taxpayer Identification Number ( FTIN ). A TIN may be assigned by the Social Security ...
The identification number has 8-digit standard format: NNNNNNN (N), where N is a numeric digit 0–9. The first numeric digit N has special meaning, and it can be one of the following digits: '1', '5' or '7'. '1': The first-time date of issuance of ID card to the bearer was 1992 or later.