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Securing user access to applications and data is more critical than ever. Authentication, the process of verifying the identity of a user or system, plays a foundational role in safeguarding systems from unauthorized access and protecting sensitive information. This verification can take many forms, each tailored to balance security with user convenience.
Identity Verification: Ensures that the person or entity trying to gain access is authentic.
Access Control: Grants or denies access based on the authenticated identity.
Security and Privacy: Protects sensitive data by limiting access to authorized users.
Authentication methods are often categorized by the type of "factor" they use. These factors are based on different forms of verification:
Something You Know: Information only the user should know, like a password or PIN.
Something You Have: A physical item in the user's possession, like a smartphone, security token, or smart card.
Something You Are: Unique biological traits, such as fingerprints, facial features, or retinal patterns (biometrics).
Somewhere You Are: Location-based authentication, where access is granted based on the user’s geographic location.
Something You Do: Behavioral patterns, like typing speed, rhythm, or swiping patterns on a touch screen.
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