Two-Factor Authentication (2FA)

Definition

Two factor authentication is a security mechanism where a user verifies a transaction using two independent authentication factors such as password and OTP.

How this works

During payment, the user enters card or account details. The system then triggers an OTP or authentication challenge that must be verified before approval.

Benefits

• Stronger fraud protection
• Secure customer authentication
• Reduced unauthorized transactions
• Regulatory compliance

FAQs

It protects customers against fraud and unauthorized access.

Password or PIN, OTP, biometric, or device based authentication.

It adds an additional step but improves transaction security.

In many countries including India, 2FA is mandated for most online card transactions.