+A **password** is a secret word or string of characters used to verify a user's identity, serving as a fundamental component of [Authentication](/wiki/authentication). It acts as a digital key, granting or denying access to systems, data, or resources and forming a critical layer of [Security](/wiki/security) in the digital realm.
+## See also
+- [Access Control](/wiki/access-control)
+- [User Account](/wiki/user-account)
+- [Encryption](/wiki/encryption)
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