Electronic signature is a term that refers to the act of using technology to sign documents digitally or electronically. Other synonyms that have been used interchangeably with electronic signature include e-signature, digital signature, and online signature. These all refer to the same concept of using technology to sign documents without physically putting a pen to paper. Other terms that can be used include electronic authorization, cyber signature, and computerized signature. All these terms are used to refer to the same concept, but the use of each may depend on the context in which it is used and the audience that is being addressed. Ultimately, the use of electronic signature has become increasingly common in many industries, including finance, legal, and healthcare, due to its convenience and security.