They are online security verification services launched by international card-issuers, namely Visa, MasterCard and American Express, which require the cardholders to supply both the credit card information and a personal security password to complete the
authorization process, in order to prove that the transaction is made by the actual cardholders. If your card-issuer offers
Verified by Visa, MasterCard® SecureCode™ or American Express SafeKey®, our e-ticketing website will automatically take you to your card issuer’s website, where you will be required to enter your personal password.
If your card issuer does not offer such verification services, you will be required to present the credit card used in your ticketing transaction upon check-in at the airport for verification purposes, noting that the cardholder must be one of the travel
(Extra Safety to Your Online Flight Purchase with Verified by Visa, MasterCard SecureCode® and American Express SafeKey®.)