Authentication

ɔːˌθɛntɪˈkeɪʃən

Authentication is the process of verifying the identity of a user or system before granting access to resources. It typically involves the use of credentials, such as usernames and passwords, biometric data, or tokens. Main characteristics of authentication include its ability to enhance security, ensure accountability, and protect sensitive information. Common use cases include logging into websites, accessing secure systems, and authorizing transactions in financial services. Various methods, such as multi-factor authentication, are employed to increase the reliability of the authentication process.