OTP Authentication
OTP (One-Time Password) Authentication is a security mechanism that uses a unique, time-limited password for each login attempt, typically generated by an app, SMS, or hardware token. It adds a second layer of verification beyond a static password, enhancing security by preventing replay attacks and credential theft. This method is widely used in two-factor authentication (2FA) and multi-factor authentication (MFA) systems to protect sensitive accounts and transactions.
Developers should implement OTP Authentication when building applications that handle sensitive user data, financial transactions, or require high-security access controls, such as banking apps, enterprise systems, or healthcare platforms. It is crucial for compliance with security standards like PCI-DSS or GDPR, and it helps mitigate risks from phishing, password breaches, and unauthorized access by ensuring that even if a password is compromised, an attacker cannot log in without the temporary code.