Authentication - Wikipedia Authentication ATM user authenticating himself Authentication (from Greek: αὐθεντικός authentikos, "real, genuine", from αὐθέντης authentes, "author") is the act of proving an assertion, such as the identity of a computer system user
What is authentication? - IBM What is authentication? In a computer system, authentication (“auth” for short) is the process that verifies that a user is who they claim to be Most authentication systems rely on authentication factors, which are items (a swipe card), characteristics (a fingerprint scan) or bits of information (a PIN code) that only the user has
What is authentication? - Cloudflare In cyber security, authentication is the process of verifying an entity's identity Learn about the different types of authentication that access control systems use
What is User Authentication, and Why is it Important? User Authentication Types Password-based Authentication: User authentication types include password-based authentication, whereby people use a unique code to be allowed entry and use a given system or service It is an easy-to-implement and commonly used technique, though it may be exposed to password theft or guessing attacks
Authentication: Definition, Types, Uses More | StrongDM Authentication is the process of verifying a user or device before allowing access to a system or resources In other words, authentication means confirming that a user is who they say they are This ensures only those with authorized credentials gain access to secure systems When a user attempts to access information on a network, they must provide secret credentials to prove their identity
What Is User Authentication? A 2025 Guide - Frontegg What is user authentication? User authentication is the process of verifying a person’s identity before granting access to a system, application, or resource It’s how systems confirm that a user is who they claim to be, typically by checking a combination of credentials like user IDs, passwords, biometrics, or authentication tokens
AUTHENTICATION Definition Meaning - Merriam-Webster The meaning of AUTHENTICATION is an act, process, or method of showing something (such as an identity, a piece of art, or a financial transaction) to be real, true, or genuine : the act or process of authenticating something —often used before another noun How to use authentication in a sentence
What is Authentication? Definition and uses - Auth0 Authentication is a term that refers to the process of proving that some fact or some document is genuine In computer science, this term is typically associated with proving a user’s identity Usually, a user proves their identity by providing their credentials, that is, an agreed piece of information shared between the user and the system