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Passwordless authentication is a method of authenticating users without requiring a password. It involves using alternative authentication factors, such as biometric information or a physical token, or a process that utilizes a one-time code or link sent through email or text message. This approach is often considered more secure than traditional password-based authentication, as passwords can be vulnerable to a variety of attacks, such as phishing, password spraying, and brute-force attacks. Many applications and services now offer passwordless authentication options as an alternative to passwords, providing users with a more convenient and secure way to access their accounts.