Signature

A signature is a hand-written, possibly stylized, version of someone's name, which may be used to confirm the person's identity.

Look up signature in Wiktionary, the free dictionary.

Signature may also refer to:

In computing:

• Signature block, text automatically appended at the bottom of an e-mail message, Usenet article, or forum post
• Method signature, in computer programming, especially object-oriented programming, how a method is commonly identified
• Type signature, which defines the inputs and outputs for a function or method

In cryptography:

• Blind signature, digital signature in which the content of a message is disguised
• Digital signature (or public-key digital signature), a method for authenticating information
• Digital Signature Algorithm, a United States Federal Government standard
• Electronic signature, a signature imputed to a text via one or more of several electronic means, or cryptographic means to add non-repudiation and message integrity features to a document
• ElGamal signature scheme, based on the difficulty of computing discrete logarithms
• Key signature (cryptography), the result of applying a hash function on a key
• XML Signature, a W3C recommendation that defines an XML syntax

In music:

• Key signature, a series of sharp or flat symbols placed on the staff, designating notes that are to be played one semitone higher or lower
• Signature (Moya Brennan album), a 2006 album by Irish musician Moya Brennan
• Signature (Joe album)
• Signature (Patrice Rushen album)
• Signature (news music), a news music and station image package composed by Stephen Arnold
• Signature song, the one song that a popular and well-established artist is identified with
• Time signature, a notational device used to specify how many beats are in each bar and which note value constitutes one beat

In science:

• Isotopic signature, a characteristic set of ratios of stable or unstable isotopes
• Signature change, in relativity
• Signature (mathematics) (another disambiguation page)
• Signature refers in physics to the form of a metric tensor: the sign of the diagonal components constitutes its "signature"
• Spectral signature, the specific combination of reflected and absorbed electromagnetic (EM) radiation at varying wavelengths which can uniquely identify an object

In other uses:

• In bookbinding, a large sheet of paper printed with several pages, which, when folded, is intended to form four or more leaves in the finished book
• Diabolical signature, in demonology, the signature of a devil, demon or similar spirit, whose purpose is usually to sign away one's soul
• Doctrine of signatures, in Christian European metaphysics
• Signature (dance group), a British Bhangra act in the 2008 series of the popular British television show Britain's Got Talent
• Signature mark, a mark at the bottom of signatures to assist the bookbinder
• Signature Records, a mid-20th century United States-based record label
• Signatures Restaurant, a restaurant formerly owned by Washington lobbyist Jack Abramoff
• Signature Digital Menus, a company specialising in the provision of digital menu boards
• Signature Theatres, a movie theatre chain in California, Hawaii, and Montana operated by Regal Entertainment Group
• Signature crime, a crime which exhibits characteristics unique to an offenders psychology.
• Signature-Plus, a French racing team.

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