Credit card authentication is a way of verifying that a person attempting a credit card transaction is who they say they are and that they are authorized to use that card.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Investopedia / Matthew Collins A reference number is a unique combination of letters and/or ...

On April 22, 2026, Kotak Mahindra Bank sent an email to its customers stating that two-factor authentication is now mandatory for government, statutory, payment gateway and other merchant payments ...