käyttäjätunnistusta
Käyttäjätunnistusta, or user authentication, is the process of verifying the identity of a user attempting to access a system, application, or service. It is a critical component of cybersecurity, ensuring that only authorized individuals can access sensitive information or perform specific actions. User authentication typically involves two main factors: something the user knows (such as a password or PIN), something the user has (like a smart card or mobile device), and something the user is (biometric data like fingerprints or facial recognition).
The most common method of user authentication is the use of passwords, which are secret strings of
Biometric authentication, which uses unique physical characteristics, is another method gaining popularity. This includes fingerprint scanning,
In recent years, there has been a shift towards more secure and user-friendly authentication methods, such as
User authentication is essential for protecting sensitive data and ensuring the integrity of systems and applications.